Worst air pollution Sidney, today and tomorrow
Today (15 July): Air quality in Sidney is fair. PM2.5, SO2, and PM1 are fair; AQI, NO2, and O3 are medium; PM10, CO, and HCHO are good. Pollution peaks around 10:00 PM (NO2: 54.1/100).
Tomorrow (16 July 2026): Air quality in Sidney is fair. SO2 decreases to good; all other pollutants stay as today. Pollution peaks around 2:00 PM (NO2: 56.9/100). 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.
Sidney's air quality benefits from its peninsula position with sea breezes on both sides, with the BC Ferries Swartz Bay terminal traffic the primary local source.
Today - 15 July | Pollution peaks at 22:00
AQI:
Medium
54.1/100
PM2.5 (fine particles):
Fair
21.0/100
PM10 (coarse particles):
Good
8.1/100
NO2 (nitrogen dioxide):
Medium
54.1/100
O3 (ozone):
Medium
40.3/100
SO2 (sulfur dioxide):
Fair
22.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Fair
22.4/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 14:00
AQI:
Medium
56.9/100
PM2.5 (fine particles):
Fair
24.4/100
PM10 (coarse particles):
Good
8.4/100
NO2 (nitrogen dioxide):
Medium
56.9/100
O3 (ozone):
Medium
49.1/100
SO2 (sulfur dioxide):
Good
16.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.8/100
PM1 (ultrafine particles):
Fair
26.4/100
Pollen forecast in Sidney
View pollen forecastFrequently Asked Questions
Is air quality bad in Sidney right now?
On 15 July 2026, overall air quality in Sidney is fair. PM1 is the main pollutant at 22.4/100. Pollution peaks around 10:00 PM (NO2: 54.1/100).
Will air quality be worse tomorrow in Sidney?
On 16 July 2026, air quality conditions in Sidney will be similar to today, with PM1 forecast at fair at 26.4/100. Pollution peaks around 2:00 PM (NO2: 56.9/100).
When is air pollution at its worst in Sidney?
Sidney's air quality follows a seasonal rhythm tied to its ferry-terminal setting on the Saanich Peninsula. Winter brings frequent rain that keeps the air clean and washed, while summer's drier stretches can occasionally trap traffic emissions and, in bad wildfire years, smoke drifting in from the BC Interior. Persistent onshore breezes off the Pacific generally keep pollutants from building up for long.
Are air quality levels in Sidney 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.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app