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 ...

Will You Finally Get Some Summer Heat Relief? Here’s Why You May See Turquoise Arches at McDonald’s The Truth About What ...

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

The combination of hot temperatures and very muggy weather will create dangerous conditions for outdoor activities each afternoon through midweek.

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 ...

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

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

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 ...

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