Tunnel air quality

Transurban operates the Clem7, including a tunnel linking Brisbane's inner north to the southern and eastern suburbs, in accordance with the QLD Government.

The in-tunnel air quality monitoring shows data for:

  • Carbon monoxide (CO)
  • Nitrogen dioxide (NO2)
  • Visibility (K)


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    Report type


The data used on this page is collected by third parties using equipment which is not controlled by Transurban Queensland and as such may be subject to faults or errors by third parties, external weather or environmental events, or server access issues. The data comes directly from the air quality monitoring instruments and sensors and has not been validated.

This data may be adjusted at a later time through a standardised procedure to account for instrument errors. Once data has been validated, a validated data report are posted on the air quality reports page.