Air quality in Lemhi and Custer counties has hit the “very unhealthy” category, prompting warnings from the Idaho Department of Health & Welfare to stay indoors as much as possible; older adults, young children and those with medical conditions will be most affected, but it’s bad enough that everyone is being advised to avoid heavy work or exercise outdoors in the affected areas. “Salmon’s getting inundated with smoke,” said Mike Toole of the Idaho DEQ. “They’re in the ‘very unhealthy’ category continually.”

via Heavy smoke in Salmon prompts health advisory, Treasure Valley’s air inches into ‘good’ range – Eye On Boise – Spokesman.com – Sept. 4, 2012.