BISMARCK, ND (KXNET) — Air temperature, dew point, heat index — all words that are thrown around by meteorologists during the heat of summer. And as the National Weather Service issued Heat Advisories ...

"It's not the heat, it's the humidity." Actually, it's both, and that's where the National Weather Service's heat index comes in. Also known as the apparent temperature, the heat index is a number ...

Temperatures are climbing into the 90s and heat index values into the 100s, prompting a heat advisory for the region. Scorching temperatures combined with the high humidity are expected Thursday, July ...

COLUMBIA, S.C. — A News19 Weather Impact Alert has been issued for the Palmetto State, not for rainfall this time, but for an extended stretch of dangerously high temperatures starting this weekend ...

High pressure will take control of our weather starting on Sunday. This will limit our rain chances during the afternoon to a few isolated thunderstorms. Otherwise, the day will be hot and sunny with ...

A Heat Advisory will be in effect from 11AM until 6PM. Heat index values could approach 110 degrees this afternoon, be safe and drink plenty of water! Starting out the day, it’s already muggy and warm ...

Temperatures start in the mid-to-high 70s Sunday morning, thanks to high humidity levels. A heat advisory is in place through 8 p.m. The rest of the day will bring more of the same: High heat and some ...

Central Florida is under a heat advisory on Friday, with temperatures expected to reach a heat index of 104 to 109 degrees. The advisory comes as the region experiences a combination of high ...

Another steamy day with the heat index value expected between 99-102 Tuesday.A heat advisory is in place through 8 a.m. WednesdayThere will be far fewer downpours (most towns stay dry) Tuesday, ...

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 temperature. Since heat index values were devised for shady, light wind ...