Fairfield County, Connecticut
AQI 44 · Good44
Median AQI
69
90th Percentile
166
Max AQI
181
Days with Data
Ranked #6 of 8 counties in Connecticut (by median AQI, lower is better)
Monthly Median AQI — 2025
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44
Median AQI
69
90th Percentile
166
Max AQI
181
Days with Data
Ranked #6 of 8 counties in Connecticut (by median AQI, lower is better)
Click a bar to view that month's details