Worst air pollution Shelton, today and tomorrow

On 9 August 2026, overall air quality in Shelton is fair. O3 is the main pollutant at 38.0/100. Pollution peaks around 1:00 PM (NO2: 42.4/100).

On 10 August 2026, air quality conditions in Shelton will be similar to today, with AQI forecast at fair at 39.0/100. Pollution peaks around 10:00 PM (NO2: 39.0/100).

Shelton follows a fairly predictable seasonal air quality pattern, as winter and spring bring the cleanest air, as frequent rain and consistent onshore wind clear pollution quickly; by contrast, the driest weeks of late summer bring the greatest risk of smoke drifting in from regional wildfires. Winter temperature inversions can briefly trap wood-smoke in low-lying valleys, but these episodes are usually short-lived.

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.