Site | State | PM AQI* (ug/m3) |
Twisp-Glover St | WA | 13 |
Yakima-4th Ave | WA | 12 |
Sunnyside-S 16th | WA | 11 |
Toppenish-Yakama Tribe | WA | 11 |
Colbert-Greenbluff | WA | 9 |
Spokane-Augusta Ave | WA | 9 |
Seattle-South Park | WA | 9 |
Spokane-E Broadway Ave (US) | WA | 8 |
Clarkston-13th St | WA | 8 |
The Dalles - Cherry Heights | OR | 8 |