An extreme cold wave from the Arctic is threatening the United States. Historically low temperatures could affect several regions, according to weather forecasts. This cold wave, fueled by large ...

A n intense heat wave is about to hit the central and eastern United States, putting millions of Americans to the test. Temperatures could reach historic levels, with potentially serious consequences.

Palm Springs, Calif., reached 117 degrees Tuesday as a heat wave in the western United States broke hundreds of records. Accessibility statement Skip to main content. Democracy Dies in Darkness.

More than 37 million Americans are under heat advisories across the U.S., according to the National Weather Service. Here's the hardest hit areas.

This week is delivering the hottest temperatures of the year so far to much of the eastern United States. See detailed maps about the latest heat index forecasts. Note: Forecast data is as of 8:16 ...