Worst air pollution Northwich, today and tomorrow

On 20 September 2026, overall air quality in Northwich is good. AQI is the main air quality indicator at 18.8/100. Pollution peaks around 9:00 AM (PM2.5: 18.8/100).

On 21 September 2026, air quality conditions in Northwich will be worse than today, with AQI forecast at fair at 21.3/100. Pollution peaks around 2:00 PM (PM2.5: 21.3/100).

For much of spring and autumn, things settle into a fairly unremarkable middle ground. Seasons make a real difference to air quality in Northwich, more than most people realise. Winter mornings can be the trickiest, with cold, still conditions trapping M5 traffic fumes and smoke from home fires close to the ground. Summer brings a different issue — stronger sunlight can push up ozone levels on hot, sunny days, even though traffic pollution itself often disperses more easily.

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.