The Air Quality Index (AQI) readings on this page are updated with information calculated on data readings averaged over 1 hour for ozone and nitrogen dioxide, over 8 hours for carbon monoxide, and over 24 hours for particulates. 

The figures represented below are averages over time, as prescribed by the NEPM standards. This means that if there is a sudden onset weather or smoke event (for example a dust storm or bush fire), it is possible that people will see the visible pollutant (smoke or dust) in the air before it starts to register on these graphs. 

If this happens, ACT Health will assess the air quality and publish a public health alert, if required.

Find out more about the Air Quality Index.

All data shown on this site is in Australian Eastern Standard Time (AEST) and may have a one-hour delay during daylight saving time (DST).

How to use the graphs

To use these graphs, hover your mouse over the graph lines to see the Air Quality Index (AQI) values for each station. Click on the Date and Time function in the table to select other periods. Click on the Name function to select/deselect stations. The legend for the graphs can be opened from the bottom right corner.

Please note all available data may be subject to further modification and validation. Gaps in the data mean a pollutant wasn’t measured at that site, an instrument was briefly offline or not enough data was collected during the time period.




Nitrogen Dioxide

Carbon Monoxide

Page last updated on: 3 Sep 2019