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 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
