This PM 2.5 concentration map is from data collected by the Fairbanks North Star Borough instrumented “sniffer” vehicle traveling on public roads near Nordale Elementary School in the Hamilton Acres neighborhood of Fairbanks, Alaska from about 2:40 to 4 PM on Wednesday, Jan. 19, 2011.
This map is an instantaneous snapshot of what was happening at that time, not a 24-hour average or a 1-hour average.
When these air samples were collected, the Borough reported particulate levels as UNHEALTHY and had recorded the 24-hour average at the downtown monitor of 68 micrograms/cubic meter. The Department of Environmental Conservation had declared an Air Quality Advisory for Fairbanks and North Pole.
DEC’s Air Quality Advisory recommended “People with respiratory or heart disease, the elderly and children should avoid prolonged exertion; everyone else should limit prolonged exertion.” It also urged, “Residents can take proactive measures to improve air quality by voluntarily reducing wood and coal burning while this air quality advisory is in effect.”
The legend shows approximate locations of coal and wood boilers and woodstoves. Some of the heating sources shown on the map may have changed over time or may not be in use. The PM 2.5 concentration map does not show all possible area sources.