Site	State	PM AQI* (ug/m3)
Twisp-Glover St	WA	17
Maple Falls-Azure Way	WA	16
Pendleton - McKay Creek	OR	15
Darrington-Fir St	WA	15
Yakima-4th Ave	WA	15
Ellensburg-Ruby St	WA	14
Walla Walla-12th St	WA	14
Omak-Colville Tribe	WA	13
Port Angeles-E 5th St	WA	13
The Dalles - Cherry Heights	OR	13