Worst air pollution 25 Metre Range - Portsea, today and tomorrow

On 17 September 2026, overall air quality in 25 Metre Range is moderate. AQI is the main air quality indicator at 43.6/100. Pollution peaks around 10:00 AM (PM2.5: 43.6/100).

On 18 September 2026, air quality conditions in 25 Metre Range will be better than today, with AQI forecast at fair at 35.0/100. Pollution peaks around 9:00 AM (PM2.5: 35.0/100).

Particulate levels here tend to peak during the coldest months of the year, driven by heating season smoke that lingers under stagnant, cold winter air. Summer shifts the concern toward bushfire smoke here too, with bushfire smoke capable of pushing particulate readings well above the ozone increase from heat and sun alone.

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.