Site	State	PM AQI* (ug/m3)
Omak-Colville Tribe	WA	193
Twisp-Ewell St	WA	173
Winthrop-Chewuch Rd	WA	162
Oroville-1117 Main St	WA	154
Coulee Dam-247 Schoolhouse ...	WA	144
Wellpinit-Spokane Tribe	WA	104
Colville-E 1st St	WA	103
Newport-Calispel	WA	102
Colbert-Greenbluff	WA	102
Airway Heights-West 12th (US)	WA	101