Worst air pollution Leeuwarden, today and tomorrow

On 21 July 2026, overall air quality in Leeuwarden is fair. AQI is the main air quality indicator at 23.4/100. Pollution peaks around 4:00 PM (O3: 23.4/100).

On 22 July 2026, air quality conditions in Leeuwarden will be similar to today, with AQI forecast at fair at 21.7/100. Pollution peaks around 6:00 AM (O3: 21.7/100).

For Leeuwarden, air quality is most affected in spring and early summer during the birch, oak, and alder pollen peak, and on calm, hot days when traffic on the A31 and local industry add to emissions; wide-open Frisian grassland and lake breezes keep the air moving. Most weeks outside these periods bring Leeuwarden conditions close to the broader Dutch norm.

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.