Larimer County, Colorado
AQI 54 · Moderate54
Median AQI
87
90th Percentile
119
Max AQI
274
Days with Data
Ranked #27 of 27 counties in Colorado (by median AQI, lower is better)
Monthly Median AQI — 2025
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54
Median AQI
87
90th Percentile
119
Max AQI
274
Days with Data
Ranked #27 of 27 counties in Colorado (by median AQI, lower is better)
Click a bar to view that month's details