Air Quality in Delaware
10-year air quality trends for 3 monitored areas in Delaware.
See full Delaware air quality rankings →3
Cities
45
Avg AQI (5yr)
3
Improving
0
Stable
0
Worsening
All Monitored Areas in Delaware
Sussex, Delaware
Sussex County · AQI 43 (5yr avg) · Improving · Ozone
B
Kent, Delaware
Kent County · AQI 43 (5yr avg) · Stable · Ozone
B
New Castle, Delaware
New Castle County · AQI 48 (5yr avg) · Improving · PM2.5
C
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Frequently Asked Questions
Delaware has 3 monitored areas with an average 5-year AQI of 45 and an average Air Quality Grade of B. 3 cities are improving, 0 are worsening, and 0 are stable.
Sussex, Delaware has the best Air Quality Grade (B) in Delaware with a 5-year average AQI of 43.
Of 3 monitored areas in Delaware, 3 are showing improving trends, 0 are worsening, and 0 remain stable over the past decade.
Sources: EPA Air Quality System (AQS)
Last updated: