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

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

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

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

NYC and the surrounding area could face their first heat wave of the season next week, as the first day of summer arrives.

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

An excessive heat warning means that a dangerous level of heat is coming in the next 12 to 24 hours. The Red Cross says this means it is time to “take precautions immediately to avoid heat ...

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

Much of the Midstate is under an Extreme Heat Warning, a first for the region. Sort of. The National Weather Service at State ...

When an excessive heat warning is issued, extreme caution is needed. This includes limiting time outdoors, drinking plenty of water (even if you're not thirsty), ...