Air quality in Maryland

Air quality index (AQI) and PM2.5 air pollution in Maryland

Last update at (local time)

LIVE AQI CITY RANKING

Real-time Maryland
Most polluted city ranking

#cityUS AQI
1 Millington

41

2 Frederick

40

3 Charlotte Hall

39

4 Cockeysville

38

5 Cambridge

36

6 Essex

36

7 Beltsville

35

8 Elkton

35

9 Frostburg

35

10 Derwood

33

(local time)

SEE WORLD AQI RANKING

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191 Contributors

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LIVE AQI CITY RANKING

Real-time Maryland
Cleanest city ranking

#cityUS AQI
1 West Laurel

4

2 Denton

8

3 Hanover

8

4 Chester

9

5 Hughesville

9

6 Lexington Park

9

7 Pocomoke City

9

8 Princess Anne

9

9 Bethesda

10

10 Brandywine

10

(local time)

SEE WORLD AQI RANKING

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Maryland air quality data attribution

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