Humidity doesn’t just make you feel sticky and uncomfortable – it also creates extra dangerous conditions on hot days.

Meteorologist Alena Lee says that Wednesday will be dry and rain-free throughout the afternoon and into the evening.

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 ...

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 ...

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

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

News Storm Team Meteorologist Chris Bouzakis has a look at what the heat index is and how it can cause heat-related illnesses ...

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 ...

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

Jacksonville is under an extreme heat warning until 7 p.m., with temperatures expected to climb into the hundreds and a feels ...