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., ...

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

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

Sweltering and "dangerous" heat with indices surpassing 100 degrees Fahrenheit across parts of nine states has prompted the ...

State Area on Friday, with record-breaking heat and severe thunderstorms.The storms were fueled, in part, by highs that ...

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

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

While triple-digit heat is not uncommon in the Big Bend and South Georgia during the summer months, it is still important to ...