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 >

Click a location below for detailed forecast.

Last Map Update: Fri, Jul 31, 2026 at 3:50:42 pm MDT

Watches, Warnings & Advisories

National Weather Service Great Falls, MT

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National Weather Service Salt Lake City, UT

Red Flag Warning

Heat Advisory

Wind Advisory

Air Quality Alert

Wildfire Smoke Affecting Air Quality

Poor air quality can risk your health. The Air Quality Index (AQI) has been ranging from Unhealthy to Hazardous across portions of E Oregon and SW Idaho due to wildfire smoke. Safety Tips: limit your time outside, wear a mask, or move indoors. Check AQ information at your location: https://www.airnow.gov