Posted: Jan 21, 2013 1:09 PM by KXLF
Updated: Jan 21, 2013 2:55 PM
BUTTE - Butte's air quality reached unhealthy standards this morning, according to monitoring data on TodaysAir.mt.gov, provided by the Department of Environmental Quality.
The air quality started to improve around 11 a.m. The air quality remains unhealthy for sensitive groups, according to the DEQ. Representatives with the Butte-Silver Bow Health Department recommend limiting rigorous outdoor activity.
The Butte-Silver Bow valley is experiencing radiation inversions. Fine particulate matter is pinned in the valley at night when cold air rolls in, according to Paul Riley, environmental monitoring director with the Butte-Silver Bow Health Department. It will take strong upper level winds to disperse the particulate matter out of the valley, according to Riley.
Visit todaysair.mt.gov for updates on Butte's air quality standards.