The World Meteorological Organization confirmed in March 2025 that 2024 was the hottest year on record and the first year in ...

A brutal heat wave across the eastern United States trapped millions of people in sweltering air this week with record-high ...

The NWS heat index maps show exactly where the worst of the heat is ... The CDC offers the usual symptoms: 103°F or higher body temperature, hot and flushed (sometimes wet) skin, fast pulse, headache, ...

Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

Heat waves like this one can put people at risk of heat exhaustion or the even more serious condition of heat stroke.

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

The Milwaukee-Sullivan National Weather Service has issued an extreme heat warning from noon on Friday, June 21 to 7 p.m. on Monday, June 23.