Site	State	PM AQI* (ug/m3)
Ritzville-Alder St	WA	28
Spokane-Monroe St.	WA	26
Sunnyside-S 16th	WA	23
Portland Near Road	OR	17
Yakima-4th Ave	WA	16
Spokane-Augusta Ave	WA	15
Spokane-E Broadway Ave (US)	WA	14
Pendleton - McKay Creek	OR	14
Azalea-176 Mobley Dr	OR	14
Colbert-Greenbluff	WA	14