Highest air pollution Sydney, today and tomorrow
Today (27 June): Air quality in Sydney is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 PM (NO2: 17.9/100).
Tomorrow (28 June 2026): Air quality in Sydney is fair. AQI worsens to fair; PM2.5 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 10:00 PM (PM1: 28.4/100). 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
Sydney's air quality is generally good, shaped by consistent sea breezes from the Tasman Sea that ventilate the coastal basin effectively. The primary air quality threats are bushfire smoke from the Blue Mountains and surrounding national parks, which can severely elevate PM2.5 across the city during summer and autumn fire seasons.
Today - 27 June | Pollution peaks at 20:00
AQI:
Good
17.9/100
PM2.5 (fine particles):
Good
11.8/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Good
17.9/100
O3 (ozone):
Good
14.8/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.8/100
PM1 (ultrafine particles):
Good
16.2/100
Levels show the poorest local air quality during the day
Tomorrow - 28 June | Pollution peaks at 22:00
AQI:
Fair
28.4/100
PM2.5 (fine particles):
Fair
23.0/100
PM10 (coarse particles):
Good
6.6/100
NO2 (nitrogen dioxide):
Good
19.9/100
O3 (ozone):
Good
16.3/100
SO2 (sulfur dioxide):
Good
8.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.2/100
PM1 (ultrafine particles):
Fair
28.4/100
Pollen forecast in Sydney
View pollen forecastFrequently Asked Questions
Is air quality bad in Sydney right now?
On 27 June 2026, overall air quality in Sydney is good. AQI is the main air quality indicator at 17.9/100. Pollution peaks around 8:00 PM (NO2: 17.9/100).
Will air quality be worse tomorrow in Sydney?
On 28 June 2026, air quality conditions in Sydney will be worse than today, with AQI forecast at fair at 28.4/100. Pollution peaks around 10:00 PM (PM1: 28.4/100).
Are air quality levels in Sydney 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.
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Data provided by Airmine — Last update: 27 June 2026 at 12:37 CET (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
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team