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AirHistory

Air Quality in Maryland

10-year air quality trends for 16 monitored areas in Maryland.

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16
Cities
41
Avg AQI (5yr)
13
Improving
2
Stable
1
Worsening

All Monitored Areas in Maryland

Frequently Asked Questions

Maryland has 16 monitored areas with an average 5-year AQI of 41 and an average Air Quality Grade of B. 13 cities are improving, 1 are worsening, and 2 are stable.

Howard, Maryland has the best Air Quality Grade (B) in Maryland with a 5-year average AQI of 37.

Of 16 monitored areas in Maryland, 13 are showing improving trends, 1 are worsening, and 2 remain stable over the past decade.

Sources: EPA Air Quality System (AQS)
Last updated: