Worst air pollution Fyrisån River Park - Uppsala, today and tomorrow

On 30 August 2026, overall air quality in Fyrisån River Park is fair. AQI is the main air quality indicator at 27.7/100. Pollution peaks around 2:00 PM (O3: 27.7/100).

On 31 August 2026, air quality conditions in Fyrisån River Park will be similar to today, with AQI forecast at fair at 25.2/100. Pollution peaks around 5:00 PM (O3: 25.2/100).

When is air quality typically worst in Fyrisån River Park? Air tends to be least fresh in deep winter, when household heating and traffic emissions get trapped under still, cold air masses. Spring usually marks a turning point, with more active weather systems reducing how often pollutants can accumulate. The warmer months usually see the cleanest air of the year, aided by better ventilation and reduced wood-burning. By October and November, cooling air and calmer evenings start to mirror the patterns that intensify further in winter. This is a fairly standard seasonal pattern for central Sweden, with a well-defined winter and summer.

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.