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

Four people died in Spain, two in France and two in Italy as an early summer heat wave continues to grip much of Europe this ...

A public health researcher explains the signs someone is developing heat exhaustion or heat stroke, and what to do.

Proactive management of livestock prior to and during heat events is critical in protecting livestock from heat stress.

The National Oceanic and Atmospheric Administration says people should start exercising “caution” when the heat index reaches ...

Weather experts explain the science behind "feels like" temperatures as the region experiences dangerous heat conditions ...

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

A heat index chart from the weather service examines the likelihood of heat disorders from prolonged exposure or strenuous activity during times of high heat and humidity. Extreme caution is urged ...

READ MORE: What to know about summer solstice, the longest day of the year Typically, someone suffering heat stroke has exhausted their reserves of sweat and salt to stay cool, so sweating ...