Air quality in Lewiston Orchards estimated
Idaho, United States. No ground monitor we can use is in this city, so these numbers are model estimates, not measurements.
≈ 4 µg/m³
Good
Estimated PM2.5, 7-day average to 2026-09-30, about 0.3× the WHO 24-hour guideline. 30-day average ≈ 5 µg/m³.
Model estimate from the Copernicus Atmosphere Monitoring Service (CAMS), scaled by 0.76 to match 10 measured cities within 300 km over the last week. Adjusted this way, a single day lands within ×1.5 of what a monitor would read about two times in three: a guide, not a measurement. Not ranked on SmogRank's boards.
Last 30 days, estimated
Daily means, UTC days. Dashed line: WHO 24-hour guideline (15 µg/m³).
Measured cities nearby
| City | Distance | 7-day average |
|---|---|---|
| Lewiston | 5 km | 7.2 µg/m³ |
| Moscow | 39 km | 4.6 µg/m³ |
| Pullman | 42 km | 4.6 µg/m³ |
| Walla Walla | 111 km | 3.3 µg/m³ |
| Coeur d'Alene | 145 km | 5.3 µg/m³ |
| Spokane Valley | 145 km | 3.4 µg/m³ |
Estimates contain modified Copernicus Atmosphere Monitoring Service information 2026. How estimates are made.