La Plata County, Colorado
AQI 50 · Good50
Median AQI
77
90th Percentile
112
Max AQI
304
Days with Data
Ranked #22 of 27 counties in Colorado (by median AQI, lower is better)
Monthly Median AQI — 2025
Click a bar to view that month's details
50
Median AQI
77
90th Percentile
112
Max AQI
304
Days with Data
Ranked #22 of 27 counties in Colorado (by median AQI, lower is better)
Click a bar to view that month's details