Dangerous heat is impacting more than 30 million people in the West this weekend, with heat alerts in effect from Arizona to Washington.

A massive marine heatwave called "the blob" has returned, stretching 5,000 miles across the Pacific and ranking as the fourth-largest on record. Beyond disrupting ocean ecosystems from plankton to ...

SEATTLE — Residents of the Western U.S. sweltered in a heat wave Saturday that hospitalized some people, with temperatures forecast to hit dangerous levels throughout the weekend in Washington, Oregon ...

High heat is expected to continue across Southern California on Thursday, possibly the hottest day of the current swath of heat impacting the region. Forecasters say it could bring record-breaking ...

A group canoes in the water off Alki Beach during a heatwave in Seattle, Washington, U.S., on Sunday, June 27, 2021, during a heat wave that set records for the city. A group canoes in the water off ...

Beach-goers on Labor Day faced a heat wave and hazardous water conditions. A heat advisory is in effect for much of LA and Orange counties. LOS ANGELES - A heat wave and hazardous water conditions ...