Site	State	PM AQI* (ug/m3)
Klamath Falls - Peterson Sc...	OR	20
Maple Falls-Azure Way	WA	19
Baker City - Forest Service	OR	18
Ellensburg-Ruby St	WA	17
Burns - Washington St.	OR	17
Yakima-4th Ave	WA	15
Sunnyside-S 16th	WA	15
John Day Dayton St	OR	15
Twisp-Glover St	WA	15
Omak-Colville Tribe	WA	14