More than 50 new heat records were set on Wednesday, as an October heat wave continues to bake California and Arizona.

The triple-digit temperatures have put millions of Californians under heat advisories. The dangerously hot temperatures have ...

A historic October heatwave with temperatures so extreme they’d be considered hot during the peak of summer isn’t over yet.

On Wednesday, about 39 million people in the region were under heat alerts, according to the National Weather Service.

AccuWeather meteorologists predict Las Vegas could see temperatures rise to 104 degrees Fahrenheit, breaking a record of 103 ...

Forecasters see more hot weather in Phoenix for now, but as the days grow shorter and the nights longer, cool weather should ...

An Excessive Heat Warning that covers the Phoenix area has now been extended until Friday. Meanwhile, many parts of the state ...

High pressure is still squatting over the American West, and it does not look to be moving anytime soon as highs remain in record territory.

Triple-digit temperatures will hit California again during a fall heat wave, prompting additional evacuations, power shutoffs ...

Thirty-six million people across the western United States are under heat advisories today, with forecasters predicting ...

Palm Springs, Calif., reached 117 degrees Tuesday as a heat wave in the western United States broke hundreds of records.