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Air quality portal

NSW Government | Roads and Maritime Services | Air quality portal

Air quality portal

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Media gallery

Select a media thumbnail below to play or download.

From the experts

  • Sydney's Air Quality-Tunnel design and ventilation outlets
  • Sydney's Air Quality-Impact of moving traffic into tunnels
  • Sydney's Air Quality-Global comparison and influencing factors
  • Sydney's Air Quality-Future technology and predictions
  • Sydney's Air Quality-Effectiveness of ventilation outlets
  • Sydney's Air Quality-A comprehensive monitoring regime

Fact sheets

  • How is air quality managed e-book (PDF)
  • Sydney's air quality (PDF)
  • Air quality monitoring stations (PDF)
  • Tunnel ventilation and filtration (PDF)

Collateral for media

Download the video and graphic files below for media use by viewing this page on a laptop or desktop computer.

  • Why we build tunnels
  • Sydney's air quality
  • How air flows through tunnels (MP4)
  • Vehicle emissions have decreased (MP4)
  • Less vehicles on local streets (MP4)
  • Tunnel animated infographic loop (MP4)
  • Key air quality infographics (PDF)
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Air quality - have your say

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Hi ,

Thank you for sharing your feedback with Roads and Maritime Services. This mailbox is monitored during business hours, between 9am and 5 pm, Monday to Friday.

We will answer your enquiry as soon as we can. To find out more about Roads and Maritime, please visit: http://www.rms.nsw.gov.au/

Regards,

Roads and Maritime Services

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PM2.5 pollution charts and maps data source: 'Ambient Air Pollution Database', World Health Organisation, 2018. For more information and full disclaimers regarding data collection, measurement, estimations and limitations view the WHO Air Pollution web page .

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Community consultation

We will be carrying out a community consultation where you can learn about the Gateway to the South works, ask questions about the project and give your feedback. Please feel free to drop in at the following locations:


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Wednesday 15 February 4:30pm-7:30pm


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Wednesday 15 February 4:30pm-7:30pm

Terms of use

This internet site is designed to provide educational information on air quality across NSW. Use of this internet site is subject to these Terms of Use.

Roads and Maritime Services makes no representations or warranties in relation to the accuracy or completeness of the information contained within this internet site or displayed by it, or the accuracy or completeness of any data (or other outcome printed or manifested in any other way) as a result of its use.

The internet site, or any data or other information displayed by the internet site is in no way binding on Roads and Maritime and may not be appropriate for your specific needs or circumstances.

The internet site may contain links to third party internet sites that are not under Roads and Maritime’s control and which Roads and Maritime does not sponsor or endorse. By linking to a third party internet site Roads and Maritime is not accepting responsibility for the content of that internet site or your use of it and makes no warranty as to its suitability. Use of any third party internet site is subject to the terms of that internet site.

Roads and Maritime makes no representation or warranty that the internet site will be continuously available or free from any delay in operation or transmission, virus, communications failure, internet access difficulties or malfunction in hardware or software. Roads and Maritime also reserves the right at any time and without notice to discontinue or modify the internet site in whole or part.

Subject to any responsibilities implied by law and which cannot be excluded, Roads and Maritime is not liable to you for any losses, expenses, damages, liabilities and claims whatsoever, whether direct, indirect or consequential, arising out of or referrable to the use of this internet site or its discontinuance, howsoever caused (including your reliance on any inaccurate or incomplete information or data contained within or displayed by the internet site) whether in contract, tort (including negligence), statute or otherwise. Roads and Maritime’s liability for breach of a condition or warranty implied by law which cannot be excluded is limited to the extent possible to the re-supply of the internet site.

What is PM10 and PM2.5?

PM2.5 are tiny particles of particle matter, thirty times smaller than a strand of human hair.

Air pollution in Australia is measured by six main contributors; carbon monoxide, nitrogen dioxide, photochemical oxidants, sulphur dioxide, lead and particle pollution or particle matter (PM). PM is generally classified according to the size of the particles.

  • Particles less than 10 micrometres in diameter are called PM10,
  • Particles less than 2.5 micrometres in diameter are PM2.5,
  • Particles less than 1 micrometre in diameter are PM1,
  • Particles less than 0.1 micrometres in diameter are called ultrafine particles (UFPs).

It is important to note that PM10 includes PM2.5, PM1, and UFPs.

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