23 states placed under 'extreme heat warning' by National Weather Service for Fourth of July weekend

Nearly half of all U.S. states are now under an extreme heat warning ahead of the July 4th weekend. Here's where it's expected to be hottest. (Photo: NWS) ...

Extreme heat warning takes effect Wednesday in Philadelphia region. Here's how high temperatures will get.

Wednesday will be Day 3 of the heat wave in the Philadelphia region as an extreme heat warning goes into effect at noon.

As a major heat wave grips the eastern US, here’s how to stay safe – and the heat stroke warning signs to watch for

Millions of Americans are facing dangerous heat and humidity going into the July Fourth holiday as a major heat wave spreads across large parts of the central and eastern United States. For many ...

Heat Wave Spreads East on Wednesday, Putting Millions More at Risk

More than 160 million people are under extreme heat warnings or heat advisories ahead of the Fourth of July weekend.

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

A heat wave will blast much of the eastern U.S. this week, and forecasters say temperatures will feel even hotter because of ...

Dangerous heat dome set to break records through July 4 holiday weekend — 'This is no ordinary heat'

A prolonged and potentially "dangerous heat wave" will scorch large stretches of the U.S. this week, with record-breaking ...

Heat wave with temps in the 90s expected all week in Chicago; heat warning extended

A high of 95 is on tap for the Tuesday, 97 degrees is expected for Wednesday, 96 for Thursday and 92 for Friday, according to ...

Excessive heat warning: Heat index to reach over 100° through Friday across Boston area

As triple-digit heat sets in, local officials are warning residents in the greater Boston area to practice safety precautions during the heat emergency. “Symptoms of heat illness can occur quickly and ...