Erie County, Pennsylvania
AQI 31 · Good31
Median AQI
58
90th Percentile
99
Max AQI
274
Days with Data
Ranked #3 of 37 counties in Pennsylvania (by median AQI, lower is better)
Monthly Median AQI — 2025
Click a bar to view that month's details
31
Median AQI
58
90th Percentile
99
Max AQI
274
Days with Data
Ranked #3 of 37 counties in Pennsylvania (by median AQI, lower is better)
Click a bar to view that month's details