Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

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Last Map Update: Sat, Aug 1, 2026 at 3:04:33 pm MST

Watches, Warnings & Advisories

National Weather Service Salt Lake City, UT

National Weather Service Grand Junction, CO

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National Weather Service Albuquerque, NM

National Weather Service NWS Tucson Arizona

Extreme Heat Warning

Red Flag Warning

Heat Advisory

Special Weather Statement

5 Day Outlook

Extreme Heat Warning + Heat Advisory

We are starting off August with the heat! Expect hot temperatures this weekend, close to the hottest of the year so far. The downtick in monsoonal activity continues, but still a few isolated storms are possible along the higher terrain.

An Extreme Heat Warning remains in effect until Monday for Marble/Glen Canyons, Oak Creek and Sycamore Canyons, and Yavapai and Gila counties below 4000 feet. An Extreme Heat Warning remains in effect until Tuesday for the Grand Canyon below 4000 feet. A Heat Advisory will be in effect today through Monday for the low elevations of northeast Arizona.