Knowing the difference between heat exhaustion and heat stroke could be the key to saving someone’s life. Here’s what you ...

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 ...

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

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 National Weather Service predicts scattered thunderstorms and high heat in Tampa, Florida, with a heat index up to 106°F ...

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

Storms pop up in the coastal areas first and then are possible inland through late afternoon and early evening. The primary ...

NWS issues a heat advisory for parts of Oklahoma and northern Texas, citing heat index values up to 110 degrees.

On the heels of the hottest day in Tampa history, 100 degrees on Sunday, Tampa International Airport (the official reporting site) hit another milestone Tuesday with a heat index of 119 at 3 p.m.

Central Florida is under a heat advisory on Friday, with temperatures expected to reach a heat index of 104 to 109 degrees.

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

The Florida heatwave continues as a massive so-called "heat dome" brings dangerously hot temperatures to Orlando and Central Florida, and the rest of the Sunshine state.