Site

State

PM AQI* (ug/m3)

Winthrop-Chewuch Rd

WA

232

Herlong-Arlington Rd

CA

223

Quincy BAM

CA

219

Susanville-520 South St

CA

209

Doyle

CA

181

Winthrop-17958 State Route 20

WA

180

Spanish Springs

NV

138

Yerington-178 Joe Parr Way

NV

110

Sparks

NV

95

Ranchos

NV

91