Portugal is expected to see highs of up to 109 degrees Fahrenheit. Parts of Spain, France, Italy and Greece are also bracing ...

A new data dashboard compares neighborhoods in California and shows why heatwaves can feel more intense in some places.

Extreme heat is making air pollution worse, scientists say. And President Trump’s regulatory rollbacks could drive air ...

As triple-digit temperatures hit the East Coast, individuals with a mental illness taking psychiatric medications could be at ...

Major heat waves across Southern Europe have pushed temperatures above 40 degrees Celsius or 104 degrees Fahrenheit in ...

Fire crews have been called to conduct multiple mountain rescues amid extreme heat in the Valley on Sunday, including one ...

The organization announced it will open 10 stations in the Valley where anyone in need can go for indoor cooling and ...

"The road exploded and rose over 18 inches, sending a car airborne," said Albert Blackwell, who captured the moment on video.

Hot temperatures continue with high temperatures peaking on Monday when an Extreme Heat Warning is in effect for portions of southeast Arizona. This warning will be in effect from 10 a.m. to 8 p.m.

There will be a slight chance of showers and thunderstorms late Tuesday and Wednesday, but most of the activity is expected to remain in the higher elevations. A slightly better chance (about 20%) of ...