More than 150 million Americans are under the highest-level extreme heat alerts during a wave of above-average temperatures.

Stay safe in this sweltering heat, New Jersey. Here's the latest today, from heat maps, advisories and warnings, to when we'll see relief.

Widespread 90s, and a few 100s, will bake much of the eastern two-thirds of the country in a dangerous heat wave. Here are ...

A multiday heat wave is bringing high temperatures and health risks from the Midwest to the Northeast, prompting warnings and ...

While “heat dome,” isn’t an official National Weather Service term, Outlaw said, these kind of heatwaves are common for the ...

This map shows where heat advisories and extreme heat watches and warnings were active as of Friday: "Summer has taken its time arriving in the Northeast, but it's coming in HOT," the National ...

For the first time in recorded history, a heat advisory was issued for several communities in the Alaska interior. For ...

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

The criteria to issue a heat advisory, excessive heat watch and excessive heat warning is not clear-cut in NJ. Here's maps, what to know.