At least nine states along the East Coast faced summer swelter on Monday, and the steamy weather is expected to persist on Tuesday.

New York City broke a record Tuesday afternoon, hitting 100 degrees Fahrenheit at La Guardia Airport. Tampa, Florida, which ...

While Texas bakes under sweltering conditions, it's far from alone. Millions are under threat of extreme heat this week.

Extreme heat warnings cover most of the southern half of Arizona and continue into southeastern California. Areas including ...

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

Extreme heat poses health risk: What to know to stay safe CHI's Dr. Cook recommends running errands and doing yardwork in the evening to avoid the heat of the day.

Temperatures could feel as high as 115F in some places bringing a very real fear of heat related deaths and major disruption ...

While Texas bakes under sweltering conditions, it's far from alone. Millions are under threat of extreme heat this week.

Newcomers to a hotter climate – Acclimatization takes time. If you’re not used to this level of heat, it can hit harder.

We’ve issued a First Alert Weather Day for Monday as a backdoor cold front moves into Eastern North Carolina, bringing the risk of dangerous heat early in the day and scattered to widespread ...

Multiple states are under extreme heat warnings, advisories or watches on July 23, according to the National Weather Service.

The Treasure Coast is under a heat advisory and many areas at “major heat risk” with heat index values expected to reach up to 108 degrees, according to the National Weather Service.