The heat index is a measure of how hot it really feels on your body when relative humidity is factored in with the actual air ...

At 12:11 a.m. on Tuesday, the National Weather Service issued an extreme heat warning valid between 11 a.m. and 9 p.m. for ...

The top heat index in Washington on a sultry Tuesday appeared to be 103. The heat index, the “feels-like” temperature, ...

An extreme heat warning and an extreme heat watch were issued by the National Weather Service in Jacksonville for July 28 and ...

Jacksonville, North, Northeast Florida: Dangerous heat today, with heat index of 108 to 115. Extreme heat warning and heat ...

The National Weather Service released an extreme heat warning at 2:32 p.m. on Tuesday in effect until 9 p.m. for Marion, ...

The National Weather Service has issued a three-day heat advisory affecting nearly every county in the state through ...

If you are living in one of many areas of the U.S. currently experiencing a heat wave, your outdoor thermometer may say it's ...

More extreme heat is expected to persist in Baltimore on Wednesday, with temperatures approaching 97 degrees and a heat index exceeding 100, before a gradual cooling trend begins later in the week.

Tampa reached another milestone on Tuesday afternoon, reaching an all-time record heat index of 119° at around 2:30 p.m.

Heat index values will hover around 110 degrees this afternoon, but scattered showers and thunderstorms will be in store ...

Brooke Hogan Addresses Rumors She & Dad Hulk ‘Fought' Before His Death: ‘I Felt a Disconnect' 8.8-magnitude earthquake sends ...