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

Each local National Weather Service office issues 3 different heat alerts to classify the appropriate level of risk posed by ...

A family of 11, including six children, was rescued off the Holbert Trail on South Mountain in Phoenix during a hot summer ...

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

San Diego faces hot weather with temperatures expected to surpass 110F, heightening the risk of heat-related illnesses.

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

EXCESSIVE HEAT WARNING goes into effect Sunday at 11 a.m. and lasts until Wednesday at 8 p.m. The highest risk for heat-related illnesses will be Monday and Tuesday. Advertisement ...