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 Aberdeen

61

2 Chestertown

30

3 Cockeysville

29

4 Parkville

29

5 Denton

26

6 Elkton

25

7 Emmitsburg

25

8 Milford Mill

25

9 Owings Mills

25

10 Reisterstown

25

(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 Brandywine

0

2 Columbia

0

3 Beltsville

3

4 Keedysville

4

5 Marlboro Meadows

4

6 Derwood

5

7 Bethesda

6

8 Saint Mary

6

9 Frostburg

7

10 Cambridge

8

(local time)

SEE WORLD AQI RANKING

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Maryland air quality data attribution

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