Worst air pollution Perth, today and tomorrow

On 9 August 2026, overall air quality in Perth is good. AQI is the main air quality indicator at 19.8/100. Pollution peaks around 8:00 AM (O3: 19.8/100).

On 10 August 2026, air quality conditions in Perth will be similar to today, with AQI forecast at good at 19.3/100. Pollution peaks around 3:00 PM (O3: 19.3/100).

Here's the thing about Perth: air quality has a clear seasonal rhythm. By summer, ozone tends to rise on bright days, while better ventilation generally keeps particulate and NO₂ levels lower than winter. Through the colder months, readings near the A82 often rise, since chimney smoke and stagnant air stop pollutants clearing away. Spring and autumn are typically the easiest months, air-quality-wise, for most residents.

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.