Sizzling US temperatures put more than 100 million people under heat alerts
Over 100 million people in the United States are under heat alerts as extreme temperatures hit the Midwest and West. Cities like Las Vegas and Phoenix are forecast to reach triple-digit highs, with little relief expected during overnight hours.
Why it matters
Extreme heat events pose significant public health risks and strain infrastructure, highlighting the growing impact of climate-related weather patterns.
More than 100 million people across the nation are under some form of heat alert on Sunday, with dangerously hot weather expected to affect a large portion of the country from the West to the Midwest.
At least seven large cities are forecast to reach triple-digit highs, including 112 degrees in Las Vegas, 109 in Phoenix and 105 in Rapid City, South Dakota. Other cities expected to top 100 degrees include Omaha, Denver, Dallas and Kansas City, while Minneapolis and St. Louis are forecast to reach the upper 90s.
Extreme heat warnings are in effect for Phoenix, Las Vegas, Minneapolis, Memphis, Omaha, Nebraska, and St. Louis and Springfield, Missouri.
Dangerous heat is expected, July 26, 2026, through the Midwest and West. ABC News Afternoon temperatures on Sunday are forecast to reach the 100-degree mark from the desert Southwest to parts of the Rockies, the Plains and the Dakotas.
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