National Weather Service United States Department of Commerce

Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Click a location below for detailed forecast.

Last Map Update: Tue, Aug 4, 2026 at 12:16:28 pm MST

A Heat Advisory remains in effect until Tuesday for the lower elevations of northeast Arizona. An Extreme Heat Warning remains in effect until Wednesday for the Grand Canyon below 4000 feet and Marble/Glen Canyons.
With the soaring temperatures, it's a good time to remind y'all about heat safety with your fluffy friends. Never leave your pets in a hot car, and be sure to provide plenty of water for them!

 

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