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

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 ...

A heat advisory has been issued for Thursday, with heat index values expected to exceed 108 degrees at times. Residents of ...

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 ...

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

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 ...

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

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

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

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

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