Sydney Air Quality Index (AQI) and Air Pollution
The Sydney Air Quality Index (AQI) today is 28 (Good). The dominant pollutant is O3. Other measured pollutants include NO₂ (2 ppb), SO₂ (0.5 ppb), CO (0.063 ppm), O₃ (0.031 ppm), PM10 (3.9µg/m³), PM2.5 (1.2 µg/m³), contributing to air pollution.
Live AQI
Air Quality is
Main Pollutant: O3
Last updated: just now
Major Pollutants Sydney
1.2 µg/m³
3.9 µg/m³
0.031 ppm
0.063 ppm
2 ppb
0.5 ppb
In Sydney, the main air pollutant is O3. It mostly comes from Ozone forms when sunlight reacts with gases from vehicles and industries. It can irritate the lungs and throat and make it difficult to breathe especially for people with asthma. To stay safe, Try to avoid outdoor exercise during afternoon hours when ozone levels are usually high.
Sydney air quality
Sydney is famous for its iconic harbour, Opera House, and vibrant coastal lifestyle, attracting millions of visitors each year. It experiences mild winters and warm summers with occasional heatwaves. Coastal winds help moderate temperatures and influence humidity levels.
Air pollution in Sydney mainly arises from vehicle emissions, industrial activity, and seasonal bushfire smoke that occasionally drifts into the city. The sea breeze from the Pacific Ocean often disperses pollutants quickly, though high-traffic areas and inner suburbs may experience elevated AQI during peak hours.