Fremont County, Colorado
AQI 25 · Good25
Median AQI
49
90th Percentile
77
Max AQI
270
Days with Data
Ranked #8 of 27 counties in Colorado (by median AQI, lower is better)
Monthly Median AQI — 2025
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25
Median AQI
49
90th Percentile
77
Max AQI
270
Days with Data
Ranked #8 of 27 counties in Colorado (by median AQI, lower is better)
Click a bar to view that month's details