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      Missoula, MT Radon Levels

      Check local Missoula radon levels and find certified testing and mitigation professionals to keep your home safe

      Missoula, MT Radon Facts

      EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
      County Missoula County, MT
      Zip Code 59801
      Avg. User Level 6.70 pCi/L
      User Tests 7

      Located in Missoula County within Montana's Rocky Mountain valley, Missoula shows an average radon level of 6.25 pCi/L, significantly exceeding the EPA action threshold and indicating widespread need for mitigation systems. The area's granite bedrock and glacial valley deposits create high radon potential, particularly problematic in homes with full basements common to this mountain climate region. Residents across zip codes 59801-59808 should test their homes and install radon mitigation systems when levels exceed 4.0 pCi/L.

      6.70
      pCi/L average
      Above EPA Action Level

      Based on 7 user-submitted radon tests for homes in Missoula, MT. The EPA recommends taking action at or above 4.0 pCi/L.

      0
      4.0 EPA
      10+

      Missoula, MT Radon Mitigation

      Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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      Missoula, MT Radon Levels

      User-submitted radon test readings from homes in the Missoula area.

      Radon LevelCityHome AgeFoundation
      7 pCi/L Missoula, MT 51-99 Years Full Basement
      8 pCi/L Missoula, MT 0-20 Years No Basement/All Crawl Space
      6 pCi/L Missoula, MT 51-99 Years Partial Basement
      5 pCi/L Missoula, MT 0-20 Years Full Basement
      6 pCi/L Missoula, MT 51-99 Years Partial Basement

      Have a radon test result for Missoula? Submit your reading to help other homeowners.

      Radon FAQ for Missoula, MT

      What is the average radon level in Missoula, MT?
      Based on 7 user-submitted tests, the average radon level in Missoula is 6.70 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
      What EPA Radon Zone is Missoula in?
      Missoula and the 59801 zip code are in Missoula County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
      How much does radon mitigation cost in Missoula?
      Radon mitigation in Missoula typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
      Should I test for radon if I'm buying a home in Missoula?
      Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

      Most Active Radon Markets in Montana

      Cities in Montana with the most user-submitted radon test data, ranked by number of submissions.

      CityAvg User Radon LevelSubmissions
      Butte 10.20 pCi/L 10
      Missoula 6.25 pCi/L 8
      Florence 11.67 pCi/L 3
      Bozeman 10.33 pCi/L 3
      Helena 8.67 pCi/L 3
      Stevensville 7.67 pCi/L 3
      Sidney 7.33 pCi/L 3
      Billings 5.33 pCi/L 3
      Miles City 3.33 pCi/L 3
      Kalispell 7.50 pCi/L 2

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      Free Radon Mitigation Quote

      Or call for a free quote: 1-800-299-3578

      A licensed contractor will contact you immediately.

      * Required