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Air

Sept. 15, 2026

Essential Agriculture burn season is open until Nov. 30, 2026. The Prescribed Wildland Outdoor burn season is open until Oct. 31, 2026. The General Outdoor burn season is closed until March 1, 2027.

The Air Quality Program at Missoula Public Health monitors air quality and regulates outdoor air pollution. Air quality sources include industry, outdoor burning, unpaved roads, and solid fuel burning devices such as wood stoves and fireplaces.

Air Quality

(406) 258-4755

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301 W. Alder St. Missoula, MT 59802

8 a.m. to 5 p.m., Monday through Friday

Did you know?
The Missoula Valley is the largest urban area in the United States surrounded by the Rocky Mountains. Because of the topography, winter temperature inversions that trap pollution near the valley floor are common, which can lead to poor air quality.

Air Quality Updates

MPH air quality specialists send out periodic updates on air quality during the summer wildfire season.