Parts of California, Oregon and Washington state will experience extreme heat at least through Tuesday, forecasters say.

Residents of the Western U.S. sweltered in a heat wave Saturday that hospitalized some people, with temperatures forecast to ...

Years of repeated exposure to heat waves may accelerate aging, particularly among manual workers, rural residents and people ...

It will be a slow cooling process, but temperatures will drop into the mid 80s by the middle of the week. Another First Alert ...

Amid ongoing wildfires, extreme heat is gripping the Pacific Northwest, with temperatures climbing into the mid-90s across Washington.

CLACKAMAS COUNTY, Ore — A woman's death in Clackamas County on Sunday is believed to be related to the heat, the county ...

The agency warned that extreme heat poses a danger in the evening as well, as temperatures are expected to remain above ...

Roderick Robinson, the utility's vice president of electric system operations, breaks down how it turned the corner on grid ...

A wildfire in California’s Napa County grew by more than 1,000 acres in 24 hours over the weekend amid an ongoing heat wave ...

The high temperature in North Bridgton reached a record 105 degrees twice in 1911, on July 4 and again on July 10 — a state record that still stands over a century later. Those highs were reached ...

A study of more than 24,000 people in Taiwan showed that those who endured frequent and intense heat waves over 15 years ...

A swath of the Midwest and West were bracing for storms and possible flooding as a "monsoonal flow" was forecast to sweep ...