The heat index considers the actual temperature and amount of moisture in the air using the dew point or relative humidity.

A heat advisory has been issued for Miami-Dade and Broward counties for Monday and will be in effect noon to 6 p.m. South ...

A heat advisory was released by the National Weather Service on Monday at 12:23 a.m. valid between 10 a.m. and 6 p.m. for ...

The National Weather Service released a heat advisory at 11:48 p.m. on Sunday valid from Monday 11 a.m. until Tuesday 9 p.m.

On Monday at 12:56 a.m. the NWS Greenville-Spartanburg SC issued an updated heat advisory valid between noon and 8 p.m. The ...

On Sunday at 1:18 p.m. the NWS Greenville-Spartanburg SC released a heat advisory valid for Monday between noon and 8 p.m.

All of Florida will be under heat advisories Monday, July 21, as a heat dome spreads from the Ohio and Mississippi valleys.

A heat advisory for Florida's Treasure Coast is in effect from noon through 6 p.m., with heat index values from 109 to 112 ...

The combination of heat and humidity will make it feel like 105-111 degrees for a sustained amount of time. Actual temperature highs will soar into the mid-90s.

Heat index values could rise to 110-112 degrees, according to the National Weather Service. Higher rain chances later in the week could offer relief.

The National Weather Service has issued another heat advisory for Central Florida, which includes Walt Disney World and ...