Worst air pollution South Perth - Perth, today and tomorrow
Today (4 August): Air quality in South Perth is medium. AQI and NO2 are medium; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 41.7/100).
Tomorrow (5 August 2026): Air quality in South Perth is fair. PM2.5 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 7:00 PM (NO2: 44.1/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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South Perth sits on the Swan River directly opposite the CBD, its foreshore parkland and low-rise streetscape benefiting from strong river and sea-breeze ventilation for much of the year. Traffic is moderate, concentrated on roads leading to the causeway and Kwinana Freeway approaches. There is no industry present. Bushfire smoke is a periodic summer risk from the Darling Range. Overall, this riverside position gives South Perth generally clean, well-ventilated air typical of Perth's river-adjacent suburbs.
Today - 4 August | Pollution peaks at 23:00
AQI:
Medium
41.7/100
PM2.5 (fine particles):
Good
13.9/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Medium
41.7/100
O3 (ozone):
Good
17.8/100
SO2 (sulfur dioxide):
Good
8.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
14.7/100
Levels show the poorest local air quality during the day
Tomorrow - 5 August | Pollution peaks at 19:00
AQI:
Medium
44.1/100
PM2.5 (fine particles):
Fair
23.9/100
PM10 (coarse particles):
Good
7.1/100
NO2 (nitrogen dioxide):
Medium
44.1/100
O3 (ozone):
Good
16.5/100
SO2 (sulfur dioxide):
Good
11.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.3/100
PM1 (ultrafine particles):
Fair
28.3/100
Other Landmarks in Perth
Sports venues in Perth
Frequently Asked Questions
Is air quality bad in South Perth right now?
On 4 August 2026, overall air quality in South Perth is medium. AQI is the main air quality indicator at 41.7/100. Pollution peaks around 11:00 PM (NO2: 41.7/100).
Will air quality be worse tomorrow in South Perth?
On 5 August 2026, air quality conditions in South Perth will be worse than today, with PM1 forecast at fair at 28.3/100. Pollution peaks around 7:00 PM (NO2: 44.1/100).
When is air pollution at its worst in South Perth?
Sitting across the river from the city, South Perth benefits from strong sea breezes that keep air quality high through most of the year. The main watch period is summer, December to March, when bushfire smoke can occasionally haze the foreshore on hot, windless mornings. Once the breeze sets in each afternoon, conditions typically clear quickly.
Are air quality levels in South Perth 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.
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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