Site | State | PM AQI* (ug/m3) |
Sunnyside-S 16th | WA | 9 |
Colbert-Greenbluff | WA | 8 |
Spokane-E Broadway Ave (US) | WA | 8 |
Spokane-Augusta Ave | WA | 8 |
Clarkston-13th St | WA | 8 |
Toppenish-Yakama Tribe | WA | 7 |
Baker City - Forest Service | OR | 7 |
Sisters Forest Service | OR | 6 |
Seattle-10th & Weller | WA | 6 |
Seattle-South Park | WA | 6 |