Air quality in Montana

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

LAST UPDATE (local time)

LIVE AQI CITY RANKING

Real-time Montana
Most polluted city ranking

#cityUS AQI
1 Libby

64

2 Missoula

58

3 Kalispell

54

4 East Missoula

43

5 Whitefish

41

6 Thompson Falls

35

7 Frenchtown

27

8 Bozeman

23

9 Malta

21

10 Broadus

15

(local time)

SEE WORLD AQI RANKING

Air Quality contributors Sources

Data provided by

Contributors

2

Data sources

1

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LIVE AQI CITY RANKING

Real-time Montana
Cleanest city ranking

#cityUS AQI
1 Butte

0

2 Dillon

0

3 Havre

0

4 Helena

0

5 West Yellowstone

0

6 Bigfork

1

7 Lewistown

5

8 Columbia Falls

6

9 Great Falls

6

10 Helena West Side

6

(local time)

SEE WORLD AQI RANKING
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
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