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

The National Weather Service has extended the heat advisory for central Ohio until June 27. COTA has extended free rides as a ...

The National Weather Service is cautioning Tri-State residents about extreme heat early this week with heat indices that ...

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

The NWS has issued an extreme heat warning for central North Carolina, with heat index values possibly reaching 112 degrees, ...

Tuesday could bring a higher heat index, with real-feel temperatures up to 111 degrees. Here's when the region could see ...

An "extreme heat warning" has officially been issued for nine major U.S. cities on Monday, June 23. The National Weather ...

Harford County is opening 11 cooling centers for those looking for a reprieve from the extreme heat in Maryland this week.

An Extreme Heat Warning is in effect for most of Southern New England except the Berkshires. Heat impacts are expected Sunday ...

It'll be very hot, but what conditions are required for the extreme heat warning that much of New Hampshire is under? Matt Hoenig breaks it all down.

Extreme Heat Warning in Chicago. The NWS issued an Extreme Heat Warning in central, northern and southern Cook counties from 10 a.m. on Saturday to midnight on Monday.

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