The smoke is affecting air quality across Montana, posing health risks to sensitive groups such as children, the elderly, and individuals with respiratory conditions. Communities downstream of active fires, including Whitehall, Bozeman, and Helena, are experiencing significant smoke impacts. Evacuation orders are in place for areas near the Sand Creek Fire, including Elkhorn Hot Springs and Maverick Mountain. Residents are advised to monitor air quality levels and limit outdoor activities, especially in areas with 'Unhealthy' particulate levels. (Source: Montana DEQ, NOAA)