Heat-related alerts had been issued for 18 states as of Monday, with the National Weather Service (NWS) urging residents to ...

As dangerous heat waves sweep the U.S., the CDC cautions against consuming caffeine. But not every expert is convinced the ...

Heat-related warnings from the National Weather Service (NWS) were in effect for parts of 11 states on Friday morning, with ...

Whether it be heat exhaustion or heat stroke, quickly move the affected person to a cooler area and remove extra layers of clothing. Apply wet cloths or wet the skin with cool water. If someone is ...

The 11 states under a heat warning this week were Washington, Oregon, California, Nevada, Idaho, Utah, Arizona, Louisiana, ...

Some parts of the Mid-South could see heat indexes of 110 this week. Here's how you can say safe in the extreme temperatures.

The combination of high temperatures and humidity is creating a significant health risk, and first responders are already seeing an increase in emergency calls.

CNN is tracking extreme heat conditions for Americans each day. See where the risks are greatest — and where high temperature records might be broken.

All of Florida will be under heat advisories Monday, July 21, as a heat dome spreads from the Ohio and Mississippi valleys. Here's what to know.

The heat index could get as high as 111 in South Florida, with the strongest heat expected along the southern Gulf Coast.

First week of summer coming in HOT! Near-record temps and triple-digit heat index values are expected. How hot will it get? Check the full forecast.

With the summer heat settling in across Alabama, state health officials are sharing tips to help you understand the warning ...