Worst air pollution Katrineholm, today and tomorrow

On 16 July 2026, overall air quality in Katrineholm is fair. AQI is the main air quality indicator at 37.3/100. Pollution peaks around 9:00 PM (O3: 37.3/100).

On 17 July 2026, air quality conditions in Katrineholm will be similar to today, with AQI forecast at fair at 31.2/100. Pollution peaks around 1:00 PM (O3: 31.2/100).

When is air quality typically worst in Katrineholm? The winter months see the year's more noticeable air quality swings, largely a function of how often calm, cold weather sets in. By spring, more frequent fronts and wind usually disperse pollutants faster, even as tree pollen becomes the bigger seasonal concern. Air quality is typically strongest in summer, helped by more wind and sunshine, though still days can occasionally push up ozone levels. Autumn is a transitional period: as the heating season resumes in September and October, occasional calm evenings can again trap wood-smoke locally. 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.