Leslie Massey
Western Australia generally experiences clean air quality compared to the rest of the world. However, the state is vulnerable to short-term extreme pollution episodes due to bushfires and dust storms. Within Western Australia, the capital city of Perth and its southern suburb Cockburn have been known to exceed national standards for air pollution. Other cities in Western Australia that have exceeded national standards include Bunbury, Busselton, and Swan.
| Characteristics | Values |
|---|---|
| Cities with bad air quality | Cockburn, Bunbury, Busselton, and Swan |
| City with the worst air quality | Cockburn |
| City with the cleanest air quality | The Vines, a suburb of Perth |
| Main pollutants | Particulate matter pollution, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide |
| Health impacts | Aggravation of asthma, irritation of eyes, nose, and throat |
| Monitoring | Hourly updates of air quality provided by the Department of Water and Environment Regulation |
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What You'll Learn
- Perth's suburb Cockburn has nearly double the global safety standards for pollution levels
- The coastal city of Bunbury has poor air quality
- South-west city Busselton has air pollution exceeding national standards
- Perth has the most frequent exceedance of national standards for photochemical smog and haze
- Western Australia is vulnerable to short-term extreme pollution episodes due to bushfires and dust storms
Perth's suburb Cockburn has nearly double the global safety standards for pollution levels
Western Australia experiences relatively clean air quality compared to global locations. However, the state is vulnerable to short-term extreme pollution episodes due to bushfires and dust storms. The main pollutants of concern are particulate matter pollution and ozone.
Among the eight Western Australian cities with available PM2.5 data, four cities, including Cockburn, exceeded Australia's national annual air quality standard of 8 μg/m3 in 2019. Cockburn's air pollution level was 8.3 μg/m3, nearly double the national standard. The suburb has been ranked as having the fourth-worst air quality in Australia.
There are several sources of pollution in Cockburn, including traffic and industrial emissions. The CCL cement and lime manufacturing plant in Munster, a suburb in Cockburn, has been identified as a significant source of odour and dust issues impacting the nearby residents. Investigations into Cockburn's air quality are ongoing, but the state government maintains that it meets national standards.
The health effects of air pollution in Cockburn are a concern. Constant exposure to hazardous air can be deadly, especially for vulnerable individuals with underlying lung or cardiovascular disease, the elderly, and babies. A study in the Medical Journal of Australia estimated that elevated PM2.5 concentrations within Western Australia between 2002 and 2017 resulted in additional hospitalisations, emergency department attendances, and deaths.
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The coastal city of Bunbury has poor air quality
Western Australia is the country's largest state by land mass and has 13,000 kilometres of coastline. While the state generally experiences clean air quality compared to the global average, it is vulnerable to short-term extreme pollution episodes, often due to bushfires and dust storms. Western Australia's main pollutants of concern are particulate matter pollution and ozone.
The Western Australian government operates an air quality monitoring network with sites in Perth and other regional areas. The Air Quality Index (AQI) provides hourly updates on nitrogen dioxide, ozone, sulfur dioxide, and particle pollution. The state's most polluted locations that exceeded national standards include the coastal city of Bunbury, with a PM2.5 level of 8.9 μg/m3.
Bunbury is a coastal city located in the South West region of Western Australia, approximately 175 kilometres south of Perth. It is the state's largest regional city, with a population of approximately 75,000 people. The city is known for its beautiful beaches, vibrant culture, and diverse natural environment. However, Bunbury has also faced challenges in maintaining good air quality.
The poor air quality in Bunbury is mainly attributed to several factors, including industrial emissions, traffic, and the nearby bushfires that frequently occur in the region. The combination of these factors leads to an increase in particulate matter pollution, which consists of tiny airborne particles less than 2.5 or 10 microns in diameter (PM2.5 and PM10, respectively). These particles can have significant health impacts, as their microscopic size allows them to be inhaled and reach various parts of the human system, including the lungs and bloodstream.
To address the air quality issues in Bunbury, local authorities have implemented various measures. This includes investing in air quality monitoring systems, promoting sustainable practices, and collaborating with nearby communities to collectively reduce pollution levels. Additionally, educational initiatives have been introduced to raise awareness about the impacts of air pollution and encourage behavioural changes that contribute to improved air quality.
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South-west city Busselton has air pollution exceeding national standards
Western Australia, the largest state in Australia by land mass, generally experiences clean air quality compared to the rest of the world. However, the state is also vulnerable to short-term extreme pollution episodes, most often due to bushfires and dust storms. Western Australia's air pollution is managed by the state's Department of Environment Regulation (DER), which carries out air quality monitoring across 15 monitoring stations statewide.
Among the 8 Western Australian cities included in IQAir's 2019 World Air Quality Report with available PM2.5 data, 4 cities exceeded Australia's national annual air quality standard of 8 μg/m3. These cities were Bunbury (8.9 μg/m3), Busselton (8.6 μg/m3), Cockburn (8.3 μg/m3), and Swan (8.1 μg/m3).
Busselton, a city in the southwest of Western Australia, has air pollution levels that exceed the national standard. The main pollutant in Busselton is PM2.5, which refers to fine particulate matter less than 2.5 microns in diameter. These particles are hazardous to human health as they can enter the lungs upon inhalation and even travel into the bloodstream, causing a range of adverse health effects.
To address air pollution in Western Australia, the government operates an air quality monitoring network with sites in Perth and regional areas. The Air Quality Index provides hourly updates on air quality in the state, and live and historical data is available from monitoring stations in Perth and other regions. Western Australia's main pollutants of concern are particulate matter pollution and ozone.
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Perth has the most frequent exceedance of national standards for photochemical smog and haze
Western Australia experiences relatively clean air quality compared to other locations worldwide. However, the state is vulnerable to short-term episodes of extreme pollution, mainly due to bushfires and dust storms. The main pollutants of concern in Western Australia are particulate matter pollution and ozone.
Perth, the state capital, has the most frequent exceedance of national standards for photochemical smog and haze. The city of Cockburn in Perth has been ranked as having the fourth-worst air quality in Australia, with pollution levels nearly double the global safety standards. Traffic and industrial emissions are significant contributors to the poor air quality in Cockburn.
Despite these challenges, Western Australia actively monitors air quality to improve the well-being of its communities. The Department of Water and Environmental Regulation operates an air quality monitoring network with sites in Perth and other regional areas. This network provides hourly updates on air quality and helps track long-term trends and their potential impacts on residents.
Additionally, the Western Australian government has implemented the National Environment Protection (Ambient Air Quality) Measure to manage and improve air quality. This measure sets standards for various key pollutants, including photochemical smog and particulate matter, to minimise their health impacts on citizens.
While Perth faces challenges with air quality, particularly in the suburb of Cockburn, the state is committed to addressing these issues through monitoring, data analysis, and the implementation of national standards. These efforts aim to ensure the air quality in Western Australia is well-managed and continually improving for the health and safety of its residents.
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Western Australia is vulnerable to short-term extreme pollution episodes due to bushfires and dust storms
Western Australia generally experiences clean air quality compared to the rest of the world. However, it is still vulnerable to short-term extreme pollution episodes, primarily due to bushfires and dust storms.
Bushfires are a common occurrence in Australia, and Western Australia is no exception. The risk of wildfires in Western Australia varies with the seasons and regional weather patterns. The northern areas are most at risk during the warm, dry, and sunny winter and spring seasons, while the southern areas are most vulnerable during late spring and early autumn. During the 2019-2020 "Black Summer," Western Australia suffered the second-largest burned area of land among all the states, with 2.04 million hectares of land burned. Bushfires emit particulate matter, which describes airborne particles less than 2.5 or 10 microns in diameter (PM2.5 and PM10, respectively). These particles are hazardous to human health as they can enter the lungs and even the bloodstream, causing a range of adverse health effects.
Dust storms are another contributor to short-term extreme pollution episodes in Western Australia. These storms can cause elevated levels of particles in the air, particularly those less than 10 micrometres in diameter (PM10). During certain years, such as 2002, 2003, 2005, 2009, 2018, 2019, and 2023, major dust storms led to more days with PM10 levels above the National Environment Protection Measure (Air NEPM) standards.
Both bushfires and dust storms release particulate matter into the atmosphere, which can have significant impacts on air quality and human health. Western Australia's vulnerability to these natural events underscores the importance of managing and continually improving its air quality to protect the health and well-being of its residents.
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Frequently asked questions
The coastal city of Bunbury, the southwest city of Busselton, Cockburn, and Swan have been known to exceed the national standard for air quality.
The main pollutants of concern in Western Australia are particulate matter pollution and ozone.
The state capital, Perth, often experiences air pollution in the form of photochemical smog and haze. However, the Perth suburb The Vines was ranked as having the cleanest air quality for PM2.5 levels in 2019.
The Western Australian Government operates an air quality monitoring network with sites in Perth and other regional areas. The Air Quality Index (AQI) provides hourly updates on the air quality and the concentration of gaseous pollutants.
Exposure to air pollution in Western Australia can have a range of health impacts, even from short-term exposure. It can aggravate existing conditions such as asthma and irritate the eyes, nose, and throat. The microscopic particulate matter can enter the lungs and bloodstream, causing further health issues.
