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NSW Ambient Air Quality Monitoring Network

Solution Overview

The NSW Government operates an ambient air quality monitoring system within the City of Sydney area, with a primary station installed at Cook & Phillip Park that measures ozone, nitrogen dioxide, visibility, carbon monoxide, sulfur dioxide and airborne particles.[8][4][11] This monitoring infrastructure forms part of Australia's largest integrated air quality monitoring system, comprising over 90 stations located in remote, rural, coastal and urban areas across New South Wales.[4][6][1] The Department of Climate Change, Energy, the Environment and Water's Air program has operated for over 60 years, enabling continuous monitoring of air quality conditions through this extensive network of stations.[9]

Technical Components

The Cook & Phillip Park monitoring station measures six key pollutants: ozone, nitrogen dioxide, visibility, carbon monoxide, sulfur dioxide and airborne particles.[8][4][11] Additional monitoring infrastructure within the City of Sydney includes the Ultimo station, which serves as the third monitoring location in the area and primarily measures pollution from vehicles travelling through Broadway.[3] In 2021, a new long-term station at Alexandria was commissioned and incorporated into NSW DCCEEW's network, expanding the monitoring coverage within the Sydney metropolitan area.[1] The department operates a comprehensive data quality management system that is accredited by the National Association of Testing Authorities (NATA) to the requirements of ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories.[6] Near-real-time data from the NSW Air Quality Monitoring Network is made available on the department's website (www.environment.nsw.gov.au/aqms) and mobile apps (search for 'NSW Air Quality'), providing hourly updated air quality category ratings for each monitoring station.[6][4] The pollution data is processed to produce an overall air quality rating, ranging from 'Extremely Poor' to 'Good', and when air quality is 'Poor', an alert and health advice is issued to all those who have subscribed to the NSW Government's free air quality update service.[3]

Implementation Details

The NSW Government has routinely monitored air pollution in Sydney since 1951, beginning with just a handful of stations measuring dust and smoke.[3][5] The first monitoring stations were established in Sydney in the 1970s to measure pollutants associated with photochemical smog.[6] The network has since expanded to become the largest in Australia with more than 90 long-term stations, well in excess of the number recommended by the National Environment Protection (Ambient Air Quality) Measure.[2][6][1] The department operates the network in partnership with industry and local government, and the network is part of a national system for monitoring and reporting on air quality, which is coordinated through the National Environment Protection Council (NEPC).[6] Within the City of Sydney area specifically, the NSW Government has plans to expand monitoring to other sites beyond the existing Cook & Phillip Park location.[8][5][10] The NSW Air Quality Monitoring Plan 2021-2025 includes actions to expand the monitoring network in western Sydney, including the Western Sydney Aerotropolis and surrounding growth areas, with implementation planned for 2021-2023.[6] Two new air quality monitoring sites are proposed for Narrabeen and Sutherland.[1] A new public website for air quality data was launched in 2018, along with a new mobile app for iOS and Android devices.[6] The Operational Network of Air Quality Impact Resources (OPENAIR) project was officially launched in January 2022 as a $2.4 million air quality monitoring research and development program funded by the NSW Department of Planning and Environment (DPE) through the Digital Restart Fund.[13]

Benefits and Impacts

The Cook and Phillip monitoring stations in East Sydney recorded the maximum annual NO2 average of 1.2 pphm for non-roadside monitoring stations in 2021, which remained below the national standard.[7] People can access real time air quality classifications from the NSW Government website, and the site in the City is consistently classified as 'good' which means there are no changes needed to normal outdoor activities, even for sensitive groups.[8] The monitoring network provides critical health protection data, as air pollution results in the premature death of more than 500 people each year in Sydney alone.[4] The program seeks to understand current air quality and its impacts, and determine how these have changed over time and are likely to change into the future.[9] The real-time monitoring and reporting capability enables the NSW Air Quality Monitoring Network to measure and report air pollution continuously, providing immediate public health information.[3]

Climate Adaptation Relevance

This air quality monitoring system addresses climate adaptation by tracking pollutants that are influenced by changing weather patterns and extreme heat events, which can exacerbate air quality conditions and create compounding health risks for vulnerable populations. The monitoring infrastructure provides essential data for understanding how climate-related factors such as temperature increases, changing wind patterns, and prolonged drought conditions affect urban air quality and public health outcomes. The expansion of monitoring stations to growth areas in western Sydney positions the network to track air quality changes in regions experiencing rapid urbanization and increased climate vulnerability.

Business Analysis

The NSW Government invested $2.4 million in the OPENAIR project through the Digital Restart Fund, demonstrating significant public sector commitment to advancing air quality monitoring capabilities through research and development.[13] The monitoring network operates under a partnership model involving the department, industry, and local government, distributing operational responsibilities and costs across multiple stakeholders.[6] The system's accreditation by NATA to ISO/IEC 17025 standards provides quality assurance that supports regulatory compliance and defensible data for policy decisions.[6] The free public access model for real-time data through websites and mobile apps eliminates user fees while maximizing public health benefits and community awareness.[6][4] The network's scale—exceeding national recommendations with over 90 stations—positions NSW as a leader in air quality monitoring infrastructure, potentially creating opportunities for technology transfer and consulting services to other jurisdictions seeking to develop similar capabilities.[2][6]

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