Explore top AZ risks:

Climate Central’s analysis shows how much hotter parks are projected to get later this century.

Arizona faces a dramatic rise in extreme heat and humidity.

More than 200,000 people living in Arizona are especially vulnerable to extreme heat.

Phoenix is the 2nd fastest-warming city in the U.S.

Arizona is currently the fourth-fastest warming state in the country based on warming rates since 1970.

While the warming of the normals can look subtle, it also means a substantial increase in the incidents of extreme heat and a decrease in the frequency of extreme cold.

Summers are getting muggier as the dewpoint temperature rises

Arizona already averages more than 50 dangerous heat days a year, the second highest in the nation. By 2050, Arizona is projected to see almost 80 such days a year.

By 2050, the severity of widespread summer drought is projected to more than triple in Arizona, the second largest increase behind Washington.

If upstream states continue to be unable to make up the shortage, Lake Mead, whose surface is now about 1,085 feet above sea level, will drop to 1,000 feet by 2020. Under present conditions, that would cut off most of Las Vegas’s water supply and much of Arizona’s. Tuscon gets almost all their water supply from the Colorado River, while Phoenix receives about half its supply from the river.

Climate Central analysis shows that the number of large fires on Forest Service land is increasing dramatically. 

By 2050, Arizona is projected to see 115 days with high wildfire potential, second only to California. 

Almost 2.9 million people living in Arizona, or 45 percent of the state's population, are at elevated risk of wildfire.

What's Happening in Your Region?


Southwest, Central Plains Face ‘Unprecedented’ Drought

Climate change is creating an “unprecedented” risk of severe drought in the Southwest and Central Plains... More


The Southwest May Have Entered a ‘Drier Climate State’

The Southwest is already the most arid part of the U.S. Now new research indicates it’s becoming even more dry as wet weather patterns, quite literally, dry up... More


Climate Change Worsening Colorado River Droughts

Even as the number of Americans relying on the Colorado River for household water swells to about 40 million, global warming appears to be taking a chunk out of the flows that feed their reservoirs... More


Dead Trees Adding to California Firefighters’ Battle

With drought and climate change conspiring to push California’s summer wildfire season into premature overdrive, the state’s lead wildfire agency has acquired a multimillion dollar arsenal to help it cope with unprecedented numbers of dying trees... More

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