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March Heat Wave Sets Records Across 170 U.S. Cities

3/25/2026

31 5 Full Breakdown

Center

Record Heat Wave

A March heat wave is breaking records across the United States, with temperatures in more than 170 cities from March 18 to 22, including 112 degrees in California and Arizona.
The heat dome driving the phenomenon is extensive, impacting a large portion of the continental United States.
Forecasts indicate the heat wave will persist with continued triple-digit highs in the Desert Southwest and Plains.

Left

Heat Wave Impact

The U.S. heat wave is driving higher insurance premiums and health risks for vulnerable populations.
Experts warn of heat-related illnesses and urge hydration.
California and Tahoe ski resorts are closing due to rapid snowmelt.
A study finds extreme heat up to 30°F above average is driven by climate change.
The heat dome is expected to persist and make such events four times more likely in over 100 cities by the end of the week.

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Record Heat Wave

A March heat wave is breaking records across the United States, with temperatures in more than 170 cities from March 18 to 22, including 112 degrees in California and Arizona.
The heat dome driving the phenomenon is extensive, impacting a large portion of the continental United States.
Forecasts indicate the heat wave will persist with continued triple-digit highs in the Desert Southwest and Plains.

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