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

A family of 11, including six children, was rescued off the Holbert Trail on South Mountain in Phoenix during a hot summer ...

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

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 ...

Nearly 160 million people are under heat alerts from eastern Texas to Maine, as temperatures are forecast to be as much as 20 ...

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

According to the Pima County Sheriff's Department, eight hikers were at Bear Mountain and had to be rescued due to ...

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

The WRC was braced for perhaps its most physically demanding test of the season thanks to a punishing blend the WRC’s ...

Providence, RI is under an extreme heat warning for the second consecutive day, with temperatures expected to reach 102 degrees and a heat index of 110. The extreme heat warning advises residents to ...