Grant-Kohrs Ranch National Historic Site
Air Quality Alert issued August 10 at 7:30AM MDT by NWS Great Falls MT
AQAMT The Montana Department of Environmental Quality has issued an air quality alert for Beaverhead, Broadwater, Deer Lodge, Flathead, Gallatin, Granite, Jefferson, Lake, Lewis and Clark, Lincoln, Madison, Mineral, Missoula, Park, Powell, Ravalli, Silver Bow, Sweet Grass, Sanders, Yellowstone counties in effect until 9AM on 08/11/2026 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. Elevated particulate levels from wildfire smoke As of 7AM on 08/10/2026, particulate levels in Columbia Falls, Frenchtown, Libby and Missoula are Unhealthy. As of 7AM on 08/10/2026, particulate levels in Billings, Dillon, Great Falls, Helena and Thompson Falls are Unhealthy for Sensitive Groups. As of 7AM on 08/10/2026, particulate levels in Butte, Cut Bank, Hamilton, Lewistown and Sleeping Giant 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. When air quality is Unhealthy for Sensitive Groups... State and local health officials recommend that people with respiratory or heart disease, the elderly and children should limit prolonged exertion. When air quality is Moderate... State and local health officials recommend that unusually sensitive people should consider reducing prolonged or heavy exertion. For more information visit the Montana Department of Environmental Quality at http://todaysair.mtdeq.us
Park Closed - Severe Weather
Extreme winter weather has caused severe road conditions, reduced visibility and dangerous wind chills.
Ranch House Closed - No Tours
There will be no ranch house tours from May 22-26, to allow for the care and preservation of the historic furnishings. Tours will resume Saturday, May 27.
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