Worst air pollution Oregon Historic District - Dayton, today and tomorrow

On 9 August 2026, overall air quality in Oregon Historic District is fair. AQI is the main air quality indicator at 35.7/100. Pollution peaks around 12:00 PM (O3: 35.7/100).

On 10 August 2026, air quality conditions in Oregon Historic District will be similar to today, with AQI forecast at fair at 34.8/100. Pollution peaks around 8:00 AM (O3: 34.8/100).

Air quality often dips most sharply during winter in this area, as reduced winter air movement lets heating emissions and wood smoke build up locally. Summer heat and sun make ozone the leading local air quality issue, since summer heat and sunlight are usually enough on their own to push ozone higher here. The transitional months of spring and fall typically see the year's lowest particulate and ozone levels.

It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.

Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.

During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.