Wildfire smoke inundates region over weekend, creating hazardous air quality conditions
The difference in size between PM 2.5 and PM 10 particles is shown in the graphic above
SPOKANE COUNTY – Consider it two records we would just as soon have not set.
Due to smoke from fires in California, Oregon and Washington that blew in beginning late Friday night, Spokane County set back-to-back records for the highest air quality contamination in record keeping going back at least to 1999, according to information from the Spokane Regional Clean Air Agency.
On Sunday, Sept. 13, a one-hour reading at the agency's reporting station on Monroe and Wellesley read 499 for PM 2.5, a pollutant created by combustion largely linked to wildfire smoke. The reading is at the top of the ch...
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