Worst air pollution Subiaco - Perth, today and tomorrow
Today (4 August): Air quality in Subiaco is fair. AQI and NO2 are fair; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 27.4/100).
Tomorrow (5 August 2026): Air quality in Subiaco is fair. PM2.5 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 7:00 PM (NO2: 30.6/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Just west of Perth's CBD, Subiaco mixes leafy residential streets with a busy entertainment and retail precinct that draws crowds and traffic, particularly around match days near the local stadium precinct. Being set back from the coast, it doesn't get quite the same direct sea breeze hit as Perth's beachfront suburbs, so vehicle emissions along its main commercial strips are a more persistent local factor. Bushfire smoke remains the main seasonal concern each summer, but overall Subiaco benefits from the region's generally clean Indian Ocean airflow.
Today - 4 August | Pollution peaks at 23:00
AQI:
Fair
27.4/100
PM2.5 (fine particles):
Good
12.4/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Fair
27.4/100
O3 (ozone):
Good
17.8/100
SO2 (sulfur dioxide):
Good
5.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
13.2/100
Levels show the poorest local air quality during the day
Tomorrow - 5 August | Pollution peaks at 19:00
AQI:
Fair
30.6/100
PM2.5 (fine particles):
Fair
21.7/100
PM10 (coarse particles):
Good
6.3/100
NO2 (nitrogen dioxide):
Fair
30.6/100
O3 (ozone):
Good
16.5/100
SO2 (sulfur dioxide):
Good
6.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.3/100
PM1 (ultrafine particles):
Fair
26.0/100
Other Landmarks in Perth
Sports venues in Perth
Frequently Asked Questions
Is air quality bad in Subiaco right now?
On 4 August 2026, overall air quality in Subiaco is fair. AQI is the main air quality indicator at 27.4/100. Pollution peaks around 11:00 PM (NO2: 27.4/100).
Will air quality be worse tomorrow in Subiaco?
On 5 August 2026, air quality conditions in Subiaco will be similar to today, with AQI forecast at fair at 30.6/100. Pollution peaks around 7:00 PM (NO2: 30.6/100).
When is air pollution at its worst in Subiaco?
Like the rest of Perth, Subiaco sees its air quality dip most during summer (December-March), when bushfire smoke is the main risk on hot, dry northerly winds. Away from fire season, a consistent onshore breeze generally keeps air quality high. For people with asthma or young kids, that's the window to watch, with little concern otherwise.
Are air quality levels in Subiaco based on measurements or forecasts?
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.
Why doesn’t the forecast always reflect wildfire impacts?
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.
Want to see air quality forecasts for other cities in Australia?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 4 August 2026 at 16:38 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
For long term forecasts and maps, see the Airmine app