About 200 million people are under some sort of heat alert Monday, including 24 million under the highest alert — extreme heat warning — for scorching conditions.

To our south and east, much hotter readings have prompted a more severe EXTREME HEAT WARNING. Portland and the Willamette ...

The dry conditions continue as High Pressure sits off the east coast through midweek while pumping in plenty of heat and humidity. Now, it won’t feel as hot as it did last month where heat indices ...

The most intense heat for the East Coast will arrive by Friday, with high temperatures in the middle to upper 90s and a heat index of 100 degrees or more possible for Washington, DC, Philadelphia ...

Parts of the Inland Empire and the valleys are expected to have triple-digit temperatures as the heat wave continues in ...

An upper-level low and wave will move into Alabama this evening. Some dry air over the state will limit the amount of storms ...

Wind shear (red - strong shear; green - low shear). Shear is typically strong to start the hurricane season: ...

A widespread heat wave is expected to intensify fire concerns across California as temperatures rise and landscapes further ...