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 ...

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 ...

With the heat index at more than 100 degrees, a lot of people may have stayed inside, but there are people who chose to enjoy ...

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 ...

The advisory was active for Western Chester, Eastern Chester, Western Montgomery, Eastern Montgomery, Upper Bucks and Lower ...

We’ve had to endure dangerous heat all week, and Thursday brings more of the same. Highs will hover around the seasonable mid 90s Thursday afternoon, but the higher humidity will lead to it feeling ...