Site	State	PM AQI* (ug/m3)
Oroville-1117 Main St	WA	183
Winthrop-Chewuch Rd	WA	161
Twisp-Ewell St	WA	138
Omak-Colville Tribe	WA	105
Colville-E 1st St	WA	85
Wellpinit-Spokane Tribe	WA	60
Spokane-E Broadway Ave	WA	53
Newport-Calispel	WA	51
Spokane-Augusta Ave	WA	49
Clarkston-13th St	WA	47