Heat dome to scorch major U.S. cities this week. Maps show the forecast and warnings.

A heat wave will blast a large swath of the U.S. this week. The National Weather Service says temperatures will feel hotter ...

These maps show how bad the surging heat and humidity levels will get

Tropical moisture will push dew points into the 70s Wednesday through Friday. When you combine that kind of moisture with ...

As U.S. Heat Wave Widens, Here’s Where Tuesday’s Temperatures Will Be Highest

A day-by-day breakdown of where dangerous heat is expected through the Fourth of July weekend. By Nazaneen Ghaffar Judson ...