Sussex County, Delaware
AQI 43 · Good43
Median AQI
58
90th Percentile
105
Max AQI
181
Days with Data
Ranked #1 of 3 counties in Delaware (by median AQI, lower is better)
Monthly Median AQI — 2025
Click a bar to view that month's details
43
Median AQI
58
90th Percentile
105
Max AQI
181
Days with Data
Ranked #1 of 3 counties in Delaware (by median AQI, lower is better)
Click a bar to view that month's details