Maps show where extreme humidity and 90- or 100-degree temperatures will affect around 255 million people across the United ...

A severe thunderstorm watch is in effect up and down the I-95 corridor through 9 p.m. Thursday for cities including Washington, D.C., Philadelphia and New York City.

The First Alert Weather Team is on a STORM ALERT on Wednesday as there is a risk of afternoon and evening thunderstorms.

Heat dome will cause dangerously high temperatures in many places across the country this weekend, especially the Midwest and ...

Heat-related alerts were in place for 21 states across the U.S. on Thursday, and the National Weather Service (NWS) warned of ...