Sometimes the temperature outside feels warmer than it is, and there's a reason. Here's a breakdown of the heat index.

The heat index, or apparent temperature, combines air temperature and relative humidity to indicate how hot it feels. High humidity slows sweating, the body's natural cooling system, making ...

With a heat wave causing excessive heat warnings in Delaware, you'll hear a lot about the heat index this week. What to know ...

Basically, when the body sweats, the perspiration evaporates, cooling the body. When the humidity is high, the sweat doesn't evaporate as quickly and the body doesn't cool itself as well. Therefore, ...

Take action when you see symptoms of heat exhaustion and heat stroke.

Hundreds of people working or playing outside – even those who seem healthy – succumb to heat-related illnesses each year.

An 'extreme heat watch' is in effect as the heat index is expected to skyrocket. Here's timing, updated heat index values, more.

When the humidity is high, the sweat doesn't evaporate as quickly and the body doesn't cool itself as well. Therefore, the body feels warmer. The heat index represents the heat you're feeling outside.

With temperatures rising into the 90s for the first time this year, the City of Rochester will activate its Cool Sweep ...

Instead of just looking at temperature when planning outdoor activities, check the heat index, which accounts for heat illness risk associated with temperature and relative humidity ... F higher than ...

National Weather Service observations at Lehigh Valley International Airport show the heat index entered the triple digits Monday morning. What’s that mean? Well, it’s hot, of course — as anyone can ...