While Texas bakes under sweltering conditions, it's far from alone. Millions are under threat of extreme heat this week.

High humidity and low overnight temperatures will put tens of millions of people under heat alerts over the course of the ...

It's a term you'll probably hear a lot this week, with high heat and humidity arriving in the Quad Cities. MOLINE, Ill. — ...

Heat-related illnesses can quickly progress to life-threatening heat stroke, so it is important to recognize the warning signs and take steps to stay cool, such as drinking fluids, finding shade, and ...

Several states, including Mississippi, are under an extreme heat warning this week. Is it safe to drink alcohol? What you ...

The heat index, or apparent temperature, combines air temperature and humidity to indicate how hot it feels to the body. High ...

A heat dome​ is trapping over 90 million Americans in extreme temperatures this week with the National Weather Service​ issuing heat alerts from Nebraska to Florida.

A heat advisory for Florida's Treasure Coast is in effect from noon through 6 p.m., with heat index values from 109 to 112 ...

All of Florida will be under heat advisories Monday, July 21, as a heat dome spreads from the Ohio and Mississippi valleys.

Heat index values will surge toward a dangerous 115 degrees in the central United States this week due to the combined effect of corn sweat and a heat dome. July has already been more humid than ...

All of Florida will be under heat advisories Monday, July 21, as a heat dome spreads from the Ohio and Mississippi valleys.