Missoula County, Montana
AQI 38 · Good38
Median AQI
56
90th Percentile
82
Max AQI
181
Days with Data
Ranked #16 of 23 counties in Montana (by median AQI, lower is better)
Monthly Median AQI — 2025
Click a bar to view that month's details
38
Median AQI
56
90th Percentile
82
Max AQI
181
Days with Data
Ranked #16 of 23 counties in Montana (by median AQI, lower is better)
Click a bar to view that month's details