York County, South Carolina
AQI 44 · Good44
Median AQI
60
90th Percentile
93
Max AQI
269
Days with Data
Ranked #8 of 13 counties in South Carolina (by median AQI, lower is better)
Monthly Median AQI — 2025
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44
Median AQI
60
90th Percentile
93
Max AQI
269
Days with Data
Ranked #8 of 13 counties in South Carolina (by median AQI, lower is better)
Click a bar to view that month's details