Site	State	PM AQI* (ug/m3)
Marysville-7th Ave	WA	16
Maple Falls-Azure Way	WA	14
Spokane-E Broadway Ave (US)	WA	13
Tacoma-L St	WA	13
Spokane-Augusta Ave	WA	13
Lyons	OR	13
Shelton-W Franklin	WA	12
Cottage Grove City Shops	OR	12
Spokane-Monroe St.	WA	12
Seattle-Duwamish	WA	12