Site | State | PM AQI* (ug/m3) |
Clarkston-13th St | WA | 11 |
Sunnyside-S 16th | WA | 10 |
Baker City - Forest Service | OR | 8 |
Spokane-E Broadway Ave (US) | WA | 8 |
Colbert-Greenbluff | WA | 7 |
Rosalia-Josephine St | WA | 7 |
Lyons | OR | 7 |
Spokane-Augusta Ave | WA | 7 |
Enterprise - US Forest Service | OR | 7 |
Seattle-South Park | WA | 6 |