Tens of millions of people across the Midwest and East endured dangerously hot temperatures again on Sunday as a sprawling ...

"A dangerous, widespread heat wave will bake the central and eastern U.S., bringing the hottest temperatures of the year and ...

A multiday heat wave is bringing high temperatures and health risks from the Midwest to the Northeast, prompting warnings and ...

More than 150 million Americans are under the highest-level extreme heat alerts during a wave of above-average temperatures.

St. Louis, Chicago and Des Moines were among the cities that saw heat indexes hit triple digits on Saturday, with the East ...

Widespread 90s, even perhaps a few 100s, will bake much of the eastern two-thirds of the country in a dangerous heat wave.

The first heat wave of summer could bring punishing humidity and triple-digit temperatures to many states east of the Rocky ...

A heat wave is moving in, with over 100 million people from the Midwest to the Northeast on alert for life-threatening heat ...

On the first official day of summer, millions of Americans already under heat warnings. These Oklahoma cities are hotter than ...

June 20 marks the first official day of summer, with millions of Americans already under heat warnings. See cities hotter ...

Temps may crack 100 for the first time in 13 years. The temperature made it to 91 on Saturday in Philly, and by the end of ...