A bout half the country is under active heat advisories on Monday, affecting more than 198 million Americans, according to ...

Extreme heat is considered the deadliest weather-related hazard in the U.S., according to the Fifth National Climate ...

Severe thunderstorms could continue into July 29, bringing havoc to morning commutes in Chicago, Milwaukee and Indianapolis.

Monday’s heat advisory is set to expire at 8 p.m. The advisory cautioned heat index values of up to 109 degrees.

Temperatures soared across Florida on July 27, including in Naples which set an all-time high for the day with a reading of ...

About 200 million people are under some sort of heat alert Monday, including 24 million under the highest alert — extreme ...

More than 250 million people in the U.S.—nearly three quarters of the population—are experiencing moderate, major or extreme ...

As a summer heat wave sweeps through the region, air conditioning systems are being pushed to their limits, and some are ...