Air quality in New Hampshire

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

LAST UPDATE (local time)

LIVE AQI CITY RANKING

Real-time New Hampshire
Most polluted city ranking

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#cityUS AQI
1 Troy

42

2 Keene

30

3 Barnstead

28

4 Londonderry

26

5 Alstead

25

6 Portsmouth

25

7 West Lebanon

24

8 Chesterfield

23

9 Meredith

22

10 Deerfield

20

(local time)

SEE WORLD AQI RANKING

Air Quality contributors Sources

Data provided by

16 Anonymous contributor

anonymous

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LIVE AQI CITY RANKING

Real-time New Hampshire
Cleanest city ranking

Tooltip icon
#cityUS AQI
1 Laconia

8

2 Peterborough

12

3 Brentwood

16

4 Deerfield

20

5 Gilford

20

6 Westmoreland

20

7 Meredith

22

8 Chesterfield

23

9 West Lebanon

24

10 Alstead

25

(local time)

SEE WORLD AQI RANKING
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
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Hazardous
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Reduce your air pollution exposure in New Hampshire

New Hampshire air quality data sources

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