Much of the U.S. is under extreme heat warnings or advisories while New York, Philadelphia and Washington could feel like 100 degrees or more.

The extreme heat is prompting several warnings for the NYC area today, including a heat advisory and an air quality alert.

A phenomenon called "corn sweat" could exacerbate the impacts of the extreme heat blanketing a large portion of the U.S., ...

The blast of heat prompted advisories across much of Massachusetts, Rhode Island, Connecticut, and in Southern New Hampshire ...

At least 100 Americans are on alert for dangerous heat and humidity -- stretching from Texas to Maine -- on Friday.

More than 100 million Americans are under heat alerts as the extreme temperatures that have smothered the Midwest this week ...

An updated heat advisory was issued by the NWS Wakefield VA on Friday at 1:37 p.m. in effect until Sunday at 8 p.m. The ...

Not only will Friday’s heat make for dangerous weather in terms of how it feels outside, but it is expected to fuel storms ...

A sunny, hot, and humid weekend is ahead for Jacksonville, with heat index values soaring in triple digits. When will ...

Extreme heat returned to the tri-state area with a vengeance Friday, pumping feels-like temperatures near 110 degrees in ...

New Jersey homes and businesses are without power. See latest updates from JCP&L, PSE&G, Atlantic City Electric and Rockland ...