Before you do anything else, do take a look at this video by Trevor Noah…



As the sixth largest state, Arizona has a lot of land, and a lot of desert. Situated at the heart of the scorching American Southwest, Arizona regularly clocks in as one of the hottest states in the country and is home to the two hottest cities in the United States. As the Earth warms, Arizona’s 7.3 million residents face life-threatening rising temperatures and ever-dwindling water supplies. In 2021, 113 confirmed heat-related deaths in Maricopa County (which includes Phoenix) was double 2020’s number. Arizona’s homeless population will be particularly vulnerable to this health hazard. The dry, hot terrain also contributes to the state’s ongoing megadrought, which adds to a whole host of issues including the diminishment of the Colorado River, which supplies water to over a third of Arizona’s population. As temperatures have risen and drought intensified, wildfires have grown larger and burn more severely.

Arizona’s energy trends lend some hope, however. Per capita energy consumption in Arizona is already among the lowest in the nation, and the state is uniquely poised for a switch to renewable and clean energy. It has some of the best solar resources in the country and produces the nation’s highest-grade uranium — crucial for nuclear energy generation. Arizona has put this resource to work in the Palo Verde Nuclear Generating Station, the nation’s largest nuclear power plant. Palo Verde generates more electricity annually than any other U.S. plantsecond only to the Grand Coulee Dam in total electricity generating capacity. Fossil fuels, unfortunately, continue to play a significant role. Since 2018, Arizona has reduced its dependency on coal but shifted to natural gas, which has become the state’s largest single energy source — generating one third of it’s power. The rest of the state’s energy comes from renewable sources, with a special emphasis on solar. Arizona ranks 5th in the nation for total solar installations.

In 2006, Arizona’s Climate Change Advisory Group was charged with preparing an inventory and forecast of Arizona’s greenhouse gas emissions and developing a Climate Change Action Plan with recommendations on how to reduce the state’s emissions. The report included a comprehensive set of 49 policy options.

By September of 2021, Arizona does not yet have a statewide adaptation plan despite the fact that they are the fourth-fastest warming state in the country. Local communities have taken up the battle as best they can. In 2009, Phoenix, the 2nd fastest warming city in the U.S., completed its  Climate Action Plan, which it plans to update by the end of 2021. Its goals: to become a carbon-neutral city by 2060 operating on 100% clean energy, with new buildings being net positive by 2050, and significant greenhouse gas reduction targets between 2025 and 2050. In July, 2020, Flagstaff declared a climate emergency. In September 2020, Tucson, the third fastest warming city in the nation, also  declared a climate emergency and will implement a decade long plan,  “Framework for Advancing Sustainability,”   to become carbon neutral by 2030.

Arizona lawmakers don’t make change easy. For example, in January of 2020, The Arizona Committee on Natural Resources and Energy voted to stop cities from prohibiting construction of natural gas-powered buildings.

In August, 2020, a highly anticipated meeting of the Arizona Corporation Commission ended abruptly, amid disputes over a roadmap to clean energy. In May, 2021  Arizona’s utility regulators rejected new rules that would have required most of the state’s electricity providers to get 100% of their power from clean energy sources by 2050 to limit carbon emissions and address climate change. Later that month the ACC, voted 3-2 to restart a rule-making process to establish a 100% clean energy standard for the state.  The commissioners are expected to vote on a final rule in the fall of 2021. Don’t hold your breath.

Or read the Sierra Club’s 2021 Environmental Report Card for the Arizona Legislature and Governor.

United Swing States of America - Arizona in the Grip of Climate Change | The Daily Show


Resilience, Water and the Environment

Arizona should be the best place to live, work, and raise a family. But today, compounding threats — to our water, our natural resources, and our climate — are already disrupting our economy, our livelihoods,…
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This epic slice of Arizona feeds their souls but lacks a basic necessity: Water

By Tyrone Beason 04/07/24
Gilarya Begaye looks out across the brush-blanketed pastures, red-dirt plains and flat-topped mesas that surround her home in the Navajo Nation. “Everywhere I’ve ever moved, it never felt like home,” says Begaye, 36. “My heart’s…
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Phoenix Approves Measure to Protect Workers from Extreme Heat as Florida Blocks Similar Efforts

The Phoenix City Council has approved a new ordinance to protect many workers from extreme heat. Phoenix is the hottest city in the country. Contractors working with the city will be required to provide cooling…
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Arizona bishop thanks Pope Francis for calling out US impacts on climate change

By Brian Roewe 03/20/24
The Catholic bishop of Tucson, Arizona, thanked Pope Francis for calling out "irresponsible" lifestyles in the United States that have contributed to climate change. Bishop Edward Weisenburger made the comments March 18 during an event…
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Danish company building massive solar farm in Arizona desert: Why are batteries being installed too?

By Ruth Wright 03/15/24
Batteries come into their own when air conditioner usage cranks up during heatwaves. Deep in the Arizona desert, a Danish company is building a massive solar farm that includes batteries that charge when the sun…
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Green Hydrogen In Arizona’s Parched Desert?

By Michael Barnard 03/10/24
Green hydrogen is absolutely essential for decarbonizing the massive global warming problem that is current hydrogen use. Our current 120 million tons is a global warming problem on the scale of all of aviation. You…
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Arizona’s health department has named the first statewide heat officer to address extreme heat

Arizona’s health department has named a physician to address ways to lessen the effects of extreme heat in the arid Southwestern state as the first statewide heat officer in the nation.
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Climate change, cost and competition for water drive settlement over tribal rights to Colorado River

By Felicia Fonseca and Suman Naishadham 02/29/24
A Native American tribe with one of the largest outstanding claims to water in the Colorado River basin is closing in on a settlement with more than a dozen parties, putting it on a path…
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Cash-strapped University of Arizona says climate action can wait

By Anita Hofschneider 02/23/24
The University of Arizona this week delayed implementation of its climate action plan citing a $177 million budget deficit. Despite rising revenues, the university has been grappling with low cash reserves due to overspending, and…
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Arizona voters are increasingly concerned about the environment

By Jessica Boehm and John Frank 02/23/24
Share of Westerners who say these issues are extremely or very serious problems. Cost of living and water security are top of mind for Arizona voters this election year, a new poll shows. Why it…
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Are recent Arizona storms related to climate change? One scientist says all weather is now

By Caralin Nunes 02/21/24
The storms that continue to batter California are almost certainly strengthened by El Niño, but does climate change contribute to the severity of them as well?
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Arizona Is Smart About Water. It Should Stay That Way.

By Mark Gongloff 02/12/24
You really have to hand it to Arizona: Even as its population has doubled and it has suffered through a decadeslong megadrought, the state uses less water today than it did 40 years ago.
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1-GWh battery now operational in Arizona for solar site powering Google data center

Salt River Project (SRP) and NextEra Energy Resources announced Arizona’s largest operational battery energy storage system is now online. Sonoran Solar Energy Center is a 260-MW solar facility with the ability to charge a 1…

Google Launches Eight-Year Clean Energy Pact Across Arizona

With the digital landscape continuing on its ever-evolving journey, demand on digital services and the energy supply to power it continues to grow. This could not be more true for Google.

Arizona’s Largest Battery is Now Operating on SRP’s Power Grid Supporting Google and Others

The solar and battery storage system is adding clean energy to the grid and will help match the electricity consumed by Google’s forthcoming data center campus in Mesa, Arizona. Energy not needed by the data…

Solar projects in the Navajo and Hopi nations to electrify homes win federal funding

Two projects in Arizona have been preliminarily selected as part of the U.S. Department of Energy’s funding for community-driven energy projects aimed at lowering energy costs and enhancing energy security in rural and remote communities…

In Arizona, 4.8 million acres of federal land could be available for solar development

The Bureau of Land Management will be hosting a public meeting in Yuma Thursday night on the agency’s Western Solar Plan. The Biden Administration released it last month and the public comment period runs through…

New regulations threaten Arizona’s renewable energy industry

Arizona has made tremendous strides in making clean energy an essential part of our economy. Thirteen percent of the state’s energy comes from renewable resources and another 29% comes from nuclear power, leaving only 57%…

Tribes, environmental groups ask U.S. court to block $10 billion energy transmission project in Arizona

A federal judge is being asked to issue a stop-work order on a $10 billion transmission line being built through a remote southeastern Arizona valley to carry wind-generated electricity to customers as far away as…

Strata begin construction of BESS project in Phoenix, Arizona

Strata Clean Energy has celebrated a milestone with a groundbreaking ceremony on the Scatter Wash battery storage complex in Phoenix, Arizona, that included executives from Strata, along with representatives from Arizona Public Service (APS), and…

Strata breaks ground on Arizona battery

Strata Clean Energy has broken ground on its 255MW/1020MWh Scatter Wash battery storage complex in Phoenix, Arizona.

Arizona utilities launch request for proposals for renewable power and energy storage projects

US utilities Tucson Electric Power (TEP) and UniSource Energy have launched a joint all-source request for proposals (ASRFP) for new power generation facilities and energy storage systems (ESS), for up to 625MW of renewable power…

Meta signs renewable energy deal in Arizona with Ørsted

The social network company this week announced its Mesa data center will soon be supported by new solar energy from Salt River Project (SRP) through a contract with Ørsted.

Taking Action on Climate Change in Arizona

Climate change is no longer a distant threat. We are at a point where we have years, not decades, to take on the interconnected crises of rapid climate change and biodiversity loss. Arizona has long…

SOAR Energy Partners with Gryphon Roofing to Reduce Energy Bills of Arizona Residents

SOAR Energy, the #1 fastest growing solar company powered by Better Earth, today announced its partnership with Gryphon Roofing, a leading residential and commercial roofing contractor servicing Arizona, which holds the second highest solar potential…

Arizona approves cut to solar compensation rates

A 37% cut had been proposed, but the Arizona Corporation Commission upheld the precedent of capping the reduction at 10%, but new risks may emerge.

Sunrise brief: Arizona to vote on 37% slash to solar net metering

Also on the rise: Microsoft invests in 6.6 MW solar facility in Mississippi. Texas to activate its first virtual power plants. And more.

Arizona rancher switches to solar energy thanks to federal funding

Agriculture brings in billions of dollars for our state each year. It also emits a lot of gasses that contribute to climate change. Date Creek rancher Savannah Figueroa is using federal dollars to reduce her…

$10 billion or more headed to Arizona in clean energy spending

In Tucson, the federal payout for buying new low- and zero-emission buses and for conserving Colorado River water over the next few years approaches $100 million.

Arizona among top states for clean economy projects and investment, report finds

In the year since the federal Inflation Reduction Act (IRA) was signed into law, Arizona has racked up some of the most clean energy project announcements and investments in the nation, according to a new…

Recurrent Energy signs agreement with Arizona Public Service Copmany for BESS project

Canadian Solar Inc. has announced that Recurrent Energy, its wholly-owned subsidiary for global project development and power services, secured a 20-year tolling agreement with Arizona Public Service Company (APS) for Papago Storage, a 1200 MWh…

SRP to Receive More Renewable Energy from CO Bar Solar

Salt River Project (SRP) and Clēnera, an Enlight Company, have announced a power purchase agreement for an additional 394 megawatts (MW) of clean energy at CO Bar Solar outside of Flagstaff. This is the second…

University of Arizona to Improve Access to Clean Energy Tech

A new environmental justice center based at the University of Arizona will try to parlay a $10 million, five-year federal grant into helping low-income communities access billions of federal dollars for solar panels, home insulation,…

Report: Arizona added 13,000 clean-energy jobs in past year, 7th best in US

The report from Climate Power said those were part of the more than 170,000 jobs nationwide that it claims have been created in the past year as a result of private investments spurred by the…

Department of Energy loans $850 million for Arizona battery manufacturing

Kore Power announced it secured a conditional loan commitment from the U.S. Department of Energy Loans Program Office, receiving $850 million to build a battery cell manufacturing facility for electric vehicles and grid-scale storage.

Arizona on track for impressive solar industry growth, report says

In Arizona, enough new solar power capacity was added to the grid in the second quarter to give the state a No. 5 ranking in the nation for total megawatts installed. Here's a look at…

Sinema Introduces Bipartisan Legislation Creating Jobs & Boosting Renewable Energy In La Paz County

Arizona senior Senator Kyrsten Sinema introduced the La Paz County Solar Energy and Job Creation Act – bipartisan legislation directing the Department of the Interior to transfer approximately 4,800 acres of Bureau of Land Management…

Discover the Largest Solar Farm in Arizona (And What Lives Around It)

Solar energy is becoming increasingly popular as a renewable energy source, and for good reason. It is clean and can be harnessed in most parts of the world. The Agua Caliente Solar Project is the…

Energy Secretary Granholm announces funding for tribal power generation, delivery in Arizona

U.S. Energy Secretary Jennifer Granholm met with Arizona tribes on Tuesday in Phoenix to hear their concerns and announce funding for several of the tribes to modernize and harden electric grids, build or expand renewable…

Massive Texas-Sized Wind Energy Transmission Project To (Finally) Link NM, AZ

It’s been 16 long years, but the dream of harvesting 3,500 megawatts of zero emission wind energy in New Mexico and shipping it off to points west has finally begun to inch closer to reality,…

US approves expansive Southwest renewable energy project, involving Arizona

The U.S. Department of the Interior announced on Thursday its decision to greenlight a 520-mile, multibillion-dollar transmission line to transport renewable energy from New Mexico to Arizona and California.

Arizona State University picked to establish clean energy institute

The U.S. Department of Energy announced this week that Arizona State University will receive federal funding to develop a Clean Energy Manufacturing Innovation Institute.

Bright future for EVs, renewable energy in Arizona 

The future looks bright for electric vehicles in Arizona, according to Court Rich, the co-founder, senior partner, and director of the Renewable Energy and Regulatory Law departments for the Rose Law Group in Scottsdale.

USDA invests $2 million in rural Arizona renewable energy infrastructure

The U.S. Department of Agriculture on Tuesday announced $6.6 million in investments for renewable energy infrastructure projects in rural communities in three states, including Arizona.

Arizona community worries energy company will hog water supply

Residents in one western Arizona community worry that a clean energy company, which plans to build nearby, could hog their groundwater supply.

National Science Foundation awards $90.8M to ASU to advance X-ray science

The National Science Foundation today announced $90.8 million in funding to Arizona State University — the largest NSF research award in the university’s history — to advance groundbreaking research in X-ray science.

Arizona county approves solar-powered cobalt sulfate production facility

The facility expects to produce 7,000 tonnes of cobalt per year and calls for 28.4 MW of on-site solar power generating arrays to be installed on 105 acres of the company’s 139-acre property in Yuma…

Public Lands Are Responsive To The Increased Demand For Renewable Energy

Significant portions of BLM public lands have excellent solar, wind and geothermal energy potential, and the BLM works to provide proper siting for environmentally sound development of renewable energy on public lands. This is an…

New transmission line will increase energy reliability in Arizona and California

By Amber Victoria Singer 02/06/23
A 125-mile transmission line is being built between Arizona and California, after nearly a decade of planning. The line, called the Ten West Link, will make it possible to send solar and wind energy between…

Without an energy office, will Arizona get its full share of the Inflation Reduction Act?

In November 2015, the five remaining state employees assigned to secure federal funds for energy efficiency on behalf of Arizonans were abruptly let go from their jobs and their roles were dissolved. It was another…

Federal funds help fast-growing Arizona city address several infrastructure challenges and needs

Joe Giudice, public works director for the city of Phoenix, says the influx of new residents is driving a lot of construction in his community. “Phoenix is the fifth largest city in the United States.…

Harris visits West Valley to applaud renewable energy project

Vice President Kamala Harris visited Tonopah on Jan. 19 for the groundbreaking of a new renewable energy project called Ten West Link.

A Copper Mine Could Advance Green Energy but Scar Sacred Land

Tribal groups are fighting an Arizona project whose backers say increasing the supply of copper, crucial to batteries, would reduce fossil-fuel use....

In Arizona, the Future of Renewable Energy Is on the Ballot

When political pundits call Arizona a key swing state in November’s midterm elections, they’re talking about the races for control of the US Senate and House. But it’s a down-ballot contest that makes Arizona a…

Revolve’s 250-MW Arizona solar project to be shovel-ready in 2024

Revolve Renewable Power Corp (CVE:REVV) expects that its 250-MW Parker solar project with battery storage in Arizona to enter the ready-to-build stage in 2024, the Vancouver, Canada-based company announced today.

These four U.S. nuclear plants will start producing clean hydrogen

The U.S. Department of Energy (DOE) is partnering with utilities on four hydrogen demonstration projects at U.S. nuclear power plants.

AZ Corporation Commission approves changes to plan to expand wind power in Arizona

The Arizona Corporation Commission has approved a modification to a plan for new transmission lines. The vote could pave the way for more wind energy in Arizona. 

Flagstaff’s Climate Action and Adaptation Plan

The Flagstaff Climate Action and Adaptation Plan is a road map for how Flagstaff will prepare for and respond to climate change.

City of Phoenix Climate Action Plan for Government Operations

Phoenix has been recognized as a leader in environmental stewardship and sustainability and has a long history of implementing pollution control and natural resource conservation programs.

Arizona Climate Change Action Plan

Arizona's Climate Change Advisory Group, formed by executive order, was charged with (1) preparing an inventory and forecast of Arizona's greenhouse gas emissions, and (2) developing this Climate Change Action Plan with recommendations for reducing…


Building America’s Next Generation Infrastructure to Power Our Future

Grid United and Black Forest Partners are co-developing the Southline Transmission Project (Southline or the Project), a 280-mile, double-circuit, high voltage transmission line and associated substation facilities. The design provides the capability to transport power…

Images of change

Disappearing Lake Mead, Nevada-Arizona Border

Arizona State Profile and Energy Estimates

Arizona is known for its stunning landscapes and natural wonders from the Grand Canyon in the north to the Saguaro deserts in the south. The state has few fossil fuel reserves, but it does have…

Energy State Bill Tracking Database

The searchable Energy Storage Legislation Database displays information in interactive maps and charts, tracking state activity from 2017 to the present.

Sustainable Cities Network

Connecting communities, advancing sustainability, and cultivating solutions.

The First National Flood Risk Assessment

The First Street Foundation Flood Model represents the culmination of decades of research and development made possible by building upon existing knowledge and frameworks regularly referenced in the identification of flood risk.

The Impacts of Climate Change and the Trump Administration’s Anti-Environmental Agenda in Arizona

Between 2017 and 2019, Arizona experienced one drought and one wildfire. The damages of each event led to losses of at least $1 billion.

State-by-State: Arizona

Arizona is vulnerable to increasing heat, melting snowpack, droughts, and wildfires

Preparing for Climate Change in Arizona

Arizona has not developed a statewide adaptation plan. Other resources from the Adaptation Clearinghouse, which have been developed by the state and localities to help communities prepare for climate change, are highlighted below.

Arizona state at risk

States at Risk is a project aimed at showing how Americans in all 50 states are experiencing the impacts of climate change. Our work focuses on five threats — extreme heat, drought, wildfires, coastal flooding…

Renewable Energy Standard & Tariff

In 2006, the Commission approved the Renewable Energy Standard and Tariff (REST). These rules require that regulated electric utilities must generate 15 percent of their energy from renewable resources by 2025. Each year, Arizona's utility…


Arizona utility regulators vote to kill renewable standards

By Joe Dana   02/07/24  
Let the market dictate how utilities do business. That was the message from Arizona utility regulators on Tuesday after they voted to begin the process of repealing the state’s energy efficiency and renewable standards.
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Phoenix plastic recycling facility touted as the first of its kind

By Jeremy Duda   02/07/24  
A new microfactory in Phoenix will manufacture products from plastic waste it has collected and processed.
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In managing Colorado River dam, feds ignored climate change, conservationists tell appeals court

By Joe Duhownik   02/06/24  
Conservationists asked the Ninth Circuit Tuesday to reverse a summary judgment finding that the federal government’s plan to manage water flow through the Glen Canyon Dam properly addressed the future impacts of climate change.
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Cattle are a part of Arizona’s history. Climate change, overgrazing concerns cloud their future

By Ron Dungan   02/05/24  
When you drive through parts of rural Arizona, it’s hard to imagine that cattle ranchers once came here for the grass. But Eduardo Pagan, a history professor at Arizona State University, says the state looked…
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How Arizona sends solar power to your light switch, long after the sun goes down

By Andy Tobin   01/30/24  
Markets that have more choice and competition are better for consumers. The energy market is no different. In the past, our choices were mostly limited to a handful of fuels — coal, oil, natural gas,…
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LG Energy unveils 10 grid-scale battery storage projects for 2024

By Lamar Johnson   01/08/24  
The portfolio of facilities will help avoid the equivalent of 16 million pounds of carbon dioxide emissions each year, the company calculated using the EPA’s greenhouse gas equivalencies calculator.
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Report: Arizona voters want more action on air pollution, climate change

By Knau Staff   01/02/24  
A new poll shows that most Arizona voters support strong clean air and climate change actions.
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Written In The Wood

By Sarah Kaplan and Others   12/20/23  
Deep in the Sonoran Desert, high on a mountain’s wind-swept peak, there lives a tree known as Bigelow 224.
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UA’s College of Public Health secures $3.8 million NIH grant to pioneer climate change and health research

By Katya Mendoza   12/13/23  
The University of Arizona Mel and Enid Zuckerman College of Public Health received funding from the National Institute of Environmental Health Sciences (NIEHS), a division of the National Institutes of Health (NIH), to fund research…
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Climate change is hurting Arizonans’ health, U.S. report says

By Tony Davis   11/25/23  
Anew federal climate report says increases in extreme heat, flooding, drought and wildfires “are negatively impacting the health of Southwest residents,” including Southern Arizonans.
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A Native American tribe is about to put solar panels over its canals

By Michelle Lewis   11/21/23  
The Gila River Indian Community signed a project partnership agreement with the US Army Corps of Engineers to put solar panels over its canals.
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Arizona’s Maricopa County has a new record for heat-associated deaths after the hottest summer

Arizona’s Maricopa County set a new record Thursday for annual heat-associated deaths, with 425 tallied so far this year, the same number confirmed for all of 2022.
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As Drought Grips the Southwest, Water Utilities Find the Hunt For More Workers Challenging

By Wyatt Myskow   10/17/23  
As the general manager of the Hopi Utilities Corporation’s water service, he works with just two other staff members to provide clean and safe drinking water to the Hopi Tribe’s reservation in Northeast Arizona. When…
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Arizona’s extreme heat threatens ‘spectacular migrations’ of butterflies

By Kevinjonah Paguio   10/15/23  
This time of year, butterflies are in backyards and parks, but it may look different this season. This year’s extreme heat is expected to affect all parts of the ecosystem, including butterflies and their migration.
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Arizona governor moves to end Saudi-owned farm’s controversial leases

By Isaac Stanley-Becker and Yvonne Wingett Sanchez   10/02/23  
Arizona Gov. Katie Hobbs said Monday that her administration would effectively kick a Saudi-owned alfalfa farm off a critical stretch of state land, a forceful step that speaks to the firestorm of controversy over foreign…
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Phoenix temperatures will heat up to the extreme once again this weekend

The National Weather Service in Phoenix warned the metropolitan area and parts of south-central Arizona could see potentially record-breaking temperatures this weekend. Areas of southeast California may also be impacted.
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The Federal Bureau of Reclamation Announces Reduced Water Cuts for Colorado River States

By Wyatt Myskow   08/15/23  
Federal officials announced Tuesday they would be easing water cuts on the Colorado River next year following a wet winter that has now given the Southwest some breathing room as users continue to negotiate long-term…
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Arizona’s Republican legislature—the most fanatical climate change deniers

By Gloria Bernstein   08/14/23  
Even with record evidenced heat that has never before been experienced consecutively in the Arizona desert, hard-line Arizona Republicans refuse to concede any resemblance of truth to the science that our planet is over-heating, it…
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Arizona Republicans don’t want to hear about the deadly heat wave

By Hank Stephenson   08/09/23  
When Arizona lawmakers returned to the state Capitol here earlier this month, they started their day with a prayer to ease the scorching heat.
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First look: Culdesac brings car-free living to car-centric Phoenix

By Jessica Boehm   08/02/23  
In a metro that's been called "sprawling," "car-centric" and "the world's least sustainable city," one new development stands in steadfast defiance.
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These places baked the most during Earth’s hottest month on record

By Ian Livingston   08/02/23  
July 2023 will go down as the hottest month on record across the globe, and perhaps the hottest in at least 120,000 years, according to climate scientists. During this sweltering month for the planet, countless…
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You Can’t Game a Climate Emergency

By Henry Grabar   08/01/23  
How hot was July in Phoenix? Too hot to be a cactus. Too hot to hold a handrail. Hot enough that children were getting second-degree burns on their feet from the surfaces of patios, balconies,…
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This Development Wants Residents to Ditch Their Cars. In Phoenix

By Ira Boudway   07/31/23  
Three years ago Robert Chaffeur, a retiree living in the suburbs of Tacoma, Washington, was looking for a new place to live when he saw an online ad for Culdesac Tempe. Billed as “the first…
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Biden goes west to talk about his administration’s efforts to combat climate change

President Joe Biden will travel to Arizona, New Mexico and Utah next week and is expected to talk about his administration’s efforts to combat climate change as the region endures a brutally hot summer with…
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It’s so hot in Arizona, doctors are treating a spike of patients who were burned by falling on the ground

By Jen Christensen   07/24/23  
It is so hot in Maricopa County, Arizona, that people are being brought into the emergency room with significant, sometimes life-threatening burns. For the past three or four weeks of this record heatwave, people have…
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Phoenix Breaks Heat Record Set in 1974

By Jacey Fortin and Mary Beth Gahan   07/18/23  
On Tuesday, Phoenix reached a miserable milestone: It was the first time the city had measured 19 days in a row of 110-degree or more temperatures, busting a record set in 1974.
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Death Valley’s scalding temperatures draw visitors: What does 128 degrees feel like?

By Isabelle Butera   07/17/23  
While most of the Southwest was advised to take cover from heat, visitors flocked to Death Valley National Park to experience some of the hottest temperatures ever recorded, according to meteorologists.
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Phoenix Roasts in Record-Breaking 110-Plus-Degree Heat, with No End in Sight

By Daniel Cusick   07/17/23  
Several million heat-tolerant Arizonans spent the weekend in air-conditioned semi-darkness, drawing their curtains shut as temperatures soared to nearly 120 degrees in one of America's largest metro areas.
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Arizona senator leans on astronaut past to call for climate crisis action amid blistering heat wave

By Paul LeBlanc and Morgan Rimmer   07/16/23  
Democratic Sen. Mark Kelly on Sunday leaned into his experience as an astronaut to call for climate crisis action amid a blistering heatwave across the United States, including his home state of Arizona.
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How a Saudi firm tapped a gusher of water in drought-stricken Arizona

By Isaac Stanley-Becker and Others   07/16/23  
A megadrought has seared Arizona, stressing its rivers and reservoirs and reducing water to a trickle in the homes of farmworkers near this desert valley.
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Groups formally oppose hydro-storage proposals on Navajo Nation

By Knau Staff   07/14/23  
A coalition of tribal and environmental groups has submitted resolutions to federal regulators opposing three pumped hydro-storage projects proposed for Black Mesa on the Navajo Nation.
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Climate change, urbanization spur scorching Phoenix heat wave

By Jerod Macdonald-Evoy   07/14/23  
Phoenix is close to breaking a record streak for consecutive days with high temperatures at or above 110 degrees, and the heat will continue to become more enduring as urbanization grows and the impacts of…
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Burning pavement, scalding water hoses: Perils of a Phoenix heat wave

By Joshua Partlow   07/13/23  
Landscaper Eduardo Rios can feel those moments when the familiar in Phoenix morphs into the treacherous, as the skin under his straw hat starts peeling off his forehead, the heat radiating up through his steel-toe…
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When Will the Southwest Become Unlivable?

By Ruxandra Guidi   07/12/23  
In the desert, summer starts in earnest in May. It’s the beginning of dry season, with highs in the 90s—just a taste of the triple-digit days to come. Some people still venture out to trails…
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Extreme heat wave reaches Arizona and swelters southern U.S.: Live weather updates

By Matthew Cappucci   07/11/23  
The three most populous U.S. states — California, Texas and Florida — are facing the worst of a punishing summertime heat wave, with 54 million Americans slated to see triple-digit highs this week. Some of…
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In Arizona Water Ruling, the Hopi Tribe Sees Limits on Its Future

By Umar Farooq   07/07/23  
In September 2020, the Hopi Tribe’s four-decade effort to secure its right to water culminated in a court proceeding. The outcome would determine how much water the arid reservation would receive over the next century…
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VP Kamala Harris discusses climate change, water crisis during Arizona visit

By Alexis Cortez   07/06/23  
Vice President Kamala Harris arrived in Arizona on Thursday for a meeting with Native American communities and Tribal Nations. This was the first time a sitting vice president had visited the Gila River Indian Community.…
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Solar sprawl is tearing up the Mojave Desert. Is there a better way?

By Sammy Roth   06/27/23  
High above the Las Vegas Strip, solar panels blanketed the roof of Mandalay Bay Convention Center — 26,000 of them, rippling across an area larger than 20 football fields.
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A grid collapse would make a heat wave far deadlier

By Maryn McKenna and Matt Simon   06/27/23  
Consider this nightmare scenario. For four days now, temperatures have soared past 110 degrees. Those able to stay home are cranking their air-conditioning while officials scramble to move the unhoused into cooling centers. Even at…
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Supreme Court rules against Navajo Nation in Colorado River case

By Adam Liptak   06/22/23  
The Supreme Court ruled against the Navajo Nation on Thursday in a water rights case, rejecting the tribe’s suit against the federal government in a dispute over access to the drought-depleted Colorado River system.
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A Puzzle in Arizona’s Boom Towns: How to Keep Growing With Less Water

By Jack Healy   06/12/23  
As the mayor of an old farming town bursting with new homes, factories and warehouses, Eric Orsborn spends his days thinking about water. The lifeblood for this growth is billions of gallons of water pumped…
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How is climate change impacting Arizona’s water resources

Enrique Vivoni and his team at ASU have been working with the Central Arizona Project for the past five years on solutions for Arizona’s watershed. Looking at aquifers, groundwater and surface systems, all of which…
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Arizona’s water troubles show how climate change is reshaping the West

By Joshua Partlow, Brady Dennis and Isaac Stanley-Becker   06/04/23  
Jay Famiglietti moved to Arizona this year after a career using satellites to study how the worst drought in a millennium was sapping groundwater beneath the American West.
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Arizona Limits Construction Around Phoenix as Its Water Supply Dwindles

By Christopher Flavelle and Jack Healy   06/01/23  
Arizona has determined that there is not enough groundwater for all of the housing construction that has already been approved in the Phoenix area, and will stop developers from building some new subdivisions, a sign…
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Arizona will halt new home approvals in parts of metro Phoenix as water supplies tighten

By Brandon Loomis   06/01/23  
The groundwater aquifers currently serving 4.6 million people across metro Phoenix are lagging behind growth on a trajectory that would run just short of projected needs in 100 years, according to a new state groundwater…
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Biden administration pauses copper mining project on Oak Flat, a sacred Apache site

By Lyric Aquino   05/24/23  
The Biden administration has put a pause on plans to erect a copper mine in Arizona on land known as Oak Flat, a site sacred to the San Carlos Apache and other Indigenous nations in…
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Western States Finally Strike Colorado River Deal. But The Hard Work Has Only Just Begun

By Alejandro De La Garza   05/24/23  
t one of Los Angeles’s main water treatment plants a few miles north of the Port of Los Angeles, a small-scale facility is demonstrating what might be part of the solution to the region’s water…
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California, Arizona and Nevada reach major deal to use less Colorado River water

Arizona, California and Nevada on Monday reached a plan to significantly reduce their use of water from the drought-stricken Colorado River over the next three years, a breakthrough in a year-long stalemate that pitted western…
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Arizona’s farms are running out of water, forcing farmers to confront climate change

By Ximena Bustillo   05/18/23  
Cassy England is a fifth-generation farmer in Pinal County, Arizona. For decades, her family has been a part of the vibrant agricultural community in the southern part of the state, growing cotton, alfalfa and grains.
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States near historic deal to protect Colorado River

By Joshua Partlow   05/17/23  
After nearly a year wrestling over the fate of their water supply, California, Arizona and Nevada — the three key states in the Colorado River’s current crisis — have coalesced around a plan to voluntarily…
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