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 3:50:43 pm MDT

Watches, Warnings & Advisories

National Weather Service Great Falls, MT

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National Weather Service Western and Central Wyoming

Fire Warning

High Wind Warning

Extreme Heat Warning

Red Flag Warning

Heat Advisory

Lake Wind Advisory

Wind Advisory

Fire Weather Watch

Air Quality Alert

Heat Risk Saturday

Fire Weather Conditions Saturday

Critical Fire Weather Conditions Sunday

Hot Weekend; Cooler To Start Next Week

Wildfire Smoke

Extreme heat returns Saturday. Take precautions to protect yourself from the heat.

Critical Fire Weather conditions are expected for portions of southern Montana on Saturday. Take care not to cause a spark.

Critical fire weather conditions are expected for most of southern Montana and portions of northern Wyoming on Sunday. Take care not to cause a spark.

Very hot conditions persist through the weekend, with Saturday being the hottest day. Much cooler conditions are forecast for Monday and Tuesday.

Wildfire smoke and hazy skies will impact much of the region through the weekend. There is potential for an increase in surface smoke and poorer air quality behind cold fronts Saturday night and Sunday night. For real time air quality, visit airnow.gov.