Worst air pollution Sunbury, today and tomorrow

On 9 August 2026, overall air quality in Sunbury is fair. PM1 is the main pollutant at 38.9/100. Pollution peaks around 11:00 PM (NO2: 51.2/100).

On 10 August 2026, air quality conditions in Sunbury will be similar to today, with O3 forecast at fair at 36.1/100. Pollution peaks around 1:00 AM (NO2: 54.2/100).

Air quality across Sunbury rises and falls with the seasons. In short, late autumn, once summer haze has cleared, tends to offer some of the freshest conditions, whereas a stretch of stagnant, humid summer days is usually when regional haze piles up the most. Dense urban traffic corridors add a persistent background level of pollution that varies less by season than ozone does.

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.