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.

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

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

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

A heat dome happens when hot air is trapped over an area due to a persistent high pressure system, William Gallus, a ...

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

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

In many areas of the state, extreme heat warnings have already been issued for the upcoming weekend. Here's what to know.

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

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

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