Worst air pollution St. Johann im Pongau, today and tomorrow

On 20 September 2026, overall air quality in St. Johann im Pongau is fair. AQI is the main air quality indicator at 28.5/100. Pollution peaks around 7:00 AM (PM2.5: 28.5/100).

On 21 September 2026, air quality conditions in St. Johann im Pongau will be better than today, with AQI forecast at good at 18.8/100. Pollution peaks around 5:00 PM (O3: 18.8/100).

The worst conditions at St. Johann im Pongau usually appear during still winter spells, as vehicle traffic and tourism become trapped by the surrounding ridges under a basin inversion. Conditions improve markedly through spring and summer as winds pick up, aside from occasional ozone spikes in prolonged heat. Autumn is typically calm and comparatively clear.

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.