Site

State

PM AQI* (ug/m3)

Herlong-Arlington Rd

CA

260

Doyle

CA

253

Winthrop-Chewuch Rd

WA

199

Susanville-520 South St

CA

168

Quincy BAM

CA

157

Twisp-Ewell St

WA

101

Salmon PM2.5

ID

69

Mineral-38450 State Highway...

CA

61

Hamilton PS 46

MT

58

Butte Greely School

MT

58