Air Quality Nonattainment Information


Air Quality Nonattainment Area Maps

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Montana State PM-2.5 Nonattainment Area
Libby  1.31MB
Montana State PM-10 Nonattainment Areas
Butte   738 KB
Columbia Falls   476 KB
Kalispell   621 KB
Libby   515 KB
Missoula   937 KB
Thompson Falls   445 KB
Whitefish   543 KB
Montana Federal PM-10 Nonattainment Areas
Lame Deer   433 KB
Polson   419 KB
Ronan   403 KB
Montana State Carbon Monoxide Nonattainment Areas
Billings     925 KB (redesignated attainment February 2002)
Great Falls     612 KB (redesignated attainment May 2002)
Kalispell   582 KB  (area of concern not legally designated as nonattainment area)
Missoula   899 KB (redesignated attainment August 2007)
Montana State Lead Nonattainment Area
East Helena   503 KB
Montana State Sulfur Dioxide Nonattainment Areas
Billings 953 KB  (area of concern not legally designated as nonattainment area)
East Helena   512 KB
Laurel   882 KB