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

Most of Long Island is under an extreme heat warning Tuesday as temperatures are expected to reach dangerous heat index ...

The dangerous heat index values and extreme humidity continues into the upcoming weekend. Warmer than normal conditions expected though the 4th of July.

New Jersey is in for one more day of very hot, humid weather on Wednesday that might include afternoon or evening rain and ...

The National Weather Service has issued an extreme heat warning for the most-populated areas of Maine due to a combination of ...

In case you've lost count, today is going to be the third 90-degree day in a row for Pittsburgh. The extreme heat will be in place through the weekend. Now, our highs will likely dip closer to 90 ...

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