York County, Pennsylvania
AQI 45 · Good45
Median AQI
66
90th Percentile
101
Max AQI
212
Days with Data
Ranked #33 of 37 counties in Pennsylvania (by median AQI, lower is better)
Monthly Median AQI — 2025
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45
Median AQI
66
90th Percentile
101
Max AQI
212
Days with Data
Ranked #33 of 37 counties in Pennsylvania (by median AQI, lower is better)
Click a bar to view that month's details