What is the air quality in Missoula MT?

Missoula MT, United States of America has an annual US AQI of 46 (Reasonable) and average PM2.5 of 8.6 µg/m³, ranking #497 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Missoula MT?

June is typically the cleanest month (AQI 37) and August the most polluted (AQI 60).

Where does Missoula MT's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998–1999, 2003, 2022; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Missoula MT, United States of America — Air Quality & Clean City Guide 2026

Missoula MT Air Quality Data

Global rank	City	Continent	AQI	PM2.5
497	Missoula MT, United States of America	North America	AQI 46	PM2.5 8.6 µg/m³