Site | State | PM AQI* (ug/m3) |
Sunnyside-S 16th | WA | 10 |
Spokane-Augusta Ave | WA | 9 |
Omak-Colville Tribe | WA | 9 |
Moses Lake-Balsam St | WA | 8 |
Spokane-E Broadway Ave (US) | WA | 8 |
Clarkston-13th St | WA | 7 |
Colbert-Greenbluff | WA | 7 |
Colville-E 1st St | WA | 7 |
Quincy 3rd | WA | 7 |
Enterprise - US Forest Service | OR | 6 |