Essex County, New York
AQI 42 · Good42
Median AQI
64
90th Percentile
159
Max AQI
273
Days with Data
Ranked #22 of 27 counties in New York (by median AQI, lower is better)
Monthly Median AQI — 2025
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42
Median AQI
64
90th Percentile
159
Max AQI
273
Days with Data
Ranked #22 of 27 counties in New York (by median AQI, lower is better)
Click a bar to view that month's details