


Air Quality Alert
Issued by NWS
Issued by NWS
935 AEUS75 KTFX 061439 AQAMT MTC001-023-039-053-061-081-089-071445- URGENT - IMMEDIATE BROADCAST REQUESTED AIR QUALITY ALERT MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY HELENA MT Relayed by National Weather Service Great Falls MT Issued by National Weather Service Missoula MT 839 AM MDT Sat Sep 6 2025 ...Air Quality Alert from the Montana Department of Environmental Quality is in Effect... The Montana Department of Environmental Quality has issued an air quality alert for Beaverhead, Deer Lodge, Granite, Lincoln, Mineral, Ravalli, Sanders counties in effect until 9AM on 09/07/2025 An Air Quality Alert means that particulates have been trending upwards and that an exceedance of the 24 hour National Ambient Air Quality Standard (NAAQS) has occurred or may occur in the near future. An Air Quality Alert means that particulates have been trending upwards and that an exceedence of the 24 hour National Ambient Air Quality Standard (NAAQS) has occurred or may occur in the near future. As of 7AM on 09/06/2025, particulate levels in Hamilton and Libby are Unhealthy for Sensitive Groups. As of 7AM on 09/06/2025, particulate levels in Billings, Butte, Columbia Falls, Dillon, Frenchtown, Helena, Lewistown, Missoula, Seeley Lake, Thompson Falls and West Yellowstone are Moderate. When air quality is Unhealthy...State and local health officials recommend that people with respiratory or heart disease...the elderly...and children should avoid prolonged exertion; everyone else should limit prolonged exertion. For more information visit the Montana Department of Environmental Quality at www.todaysair.mt.gov $$