Worst air pollution Chatswood - Sydney, today and tomorrow
Today (25 August): Air quality in Chatswood is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (NO2: 16.3/100).
Tomorrow (26 August 2026): Air quality in Chatswood is fair. AQI worsens to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 38.6/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
A commercial and residential hub on Sydney's leafy north shore, Chatswood mixes tree-lined streets with a dense shopping and transport interchange where trains, buses and heavy retail traffic converge. That combination means air quality here can vary block by block, cleaner in the surrounding residential streets and busier near the station precinct. Being elevated and inland, Chatswood doesn't get the same direct sea breeze as the coastal suburbs, so wood smoke can linger on cold winter nights, and summer bushfire haze from the wider region is a recurring seasonal visitor.
Today - 25 August | Pollution peaks at 08:00
AQI:
Good
16.3/100
PM2.5 (fine particles):
Good
6.1/100
PM10 (coarse particles):
Good
1.7/100
NO2 (nitrogen dioxide):
Good
16.3/100
O3 (ozone):
Good
14.7/100
SO2 (sulfur dioxide):
Good
7.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.4/100
PM1 (ultrafine particles):
Good
8.2/100
Levels show the poorest local air quality during the day
Tomorrow - 26 August | Pollution peaks at 23:00
AQI:
Fair
38.6/100
PM2.5 (fine particles):
Good
9.2/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Fair
38.6/100
O3 (ozone):
Good
18.3/100
SO2 (sulfur dioxide):
Good
9.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
9.1/100
Other Landmarks in Sydney
Sports venues in Sydney
Frequently Asked Questions
Is air quality bad in Chatswood right now?
On 25 August 2026, overall air quality in Chatswood is good. AQI is the main air quality indicator at 16.3/100. Pollution peaks around 8:00 AM (NO2: 16.3/100).
Will air quality be worse tomorrow in Chatswood?
On 26 August 2026, air quality conditions in Chatswood will be worse than today, with AQI forecast at fair at 38.6/100. Pollution peaks around 11:00 PM (NO2: 38.6/100).
When is air pollution at its worst in Chatswood?
The period to plan around in Chatswood mirrors Sydney as a whole: the December-to-March bushfire season, when smoke from nearby fires drifts through on hot northerlies. A second dip comes in winter, when still nights trap wood-heater smoke near ground level. Sensitive groups should watch forecasts during that period rather than assume year-round conditions apply.
Are air quality levels in Chatswood 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: 24 August 2026 at 20:27 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
Get the full experience in the Airmine app.