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.


  • Air quality across New South Wales may be affected by hazard reduction burning. See Fires Near Me and follow the recommended health advice.
  • DPE and NSW EPA are partnering to monitor air quality around the Warringah Freeway Upgrade/Western Harbour Tunnel. For more information see the EPA website.
    This includes a monitoring station at Cammeray with data on the special projects page, and a network of particle sensors from Wollstonecraft to Middle Harbour, with data on the KOALAs website.
  • News: The NSW Government is developing a dedicated air quality website, that presents air quality data and information that is fit-for-purpose, easy-to-understand and works well on desktop and mobile devices.
    We invite you to try our first release or find out more.
  • Live data is always reported in Standard Time (AEST).



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