A NSW Government website

Current and forecast air quality

Air quality concentration data - updated hourly

View the latest data for ozone, nitrogen dioxide, visibility, carbon monoxide, sulfur dioxide and airborne particles collected at NSW air quality monitoring sites. Follow the air quality category colours and use the activity guide to protect your health.

Air quality data is updated hourly and a daily air quality forecast is made for the Greater Sydney Metropolitan Region at 4pm each day.


  • From November 2020 New South Wales has implemented air quality categories (AQC) and no longer uses air quality indices (AQI) for air quality reporting. More information.
  • Hazard reduction burn (HRB) season has started in NSW. Please monitor Fires Near Me by the RFS for the location of HRBs. Air quality during the cooler months may also be affected by smoke from domestic wood heating. NSW Health and the health activity guide provide information on how to protect yourself from smoke.
  • Live data is always reported in Standard Time (AEST).



View the data licence statement for information about using and attributing these data.