As a heat wave hits multiple U.S. states, some areas are have been placed under extreme heat watches and warnings.

Philadelphia is under an extreme heat warning with heat index values up to 105 degrees, advising residents to stay cool and ...

Severe weather is possible Tuesday and Wednesday, along with the extreme heat warning in western Pennsylvania.

We're hitting peak heat wave today, with a handful of Michigan counties forecast to be the hottest places in the state.

The peak of the heat will be Tuesday when the temperature may challenge all-time records for the month of June in Boston.

Orange County responds to extreme heat warning by activating cooling centers and providing additional support like misting tents and water for residents.

A heat dome is affecting much of the central and eastern U.S., creating high levels of heat and humidity. What to know in ...

Central Park last had a 100-degree day on July 18, 2012, and hasn’t seen a triple-digit temperature in June since 1952.

With New York under an extreme heat warning, the Mets took extra precautions Monday. Those included a later report time for ...

Wicomico County has opened multiple cooling centers amidst this week's extreme weather. Here's what you need to know about ...