Brian Barton
Brussels, the capital of Belgium, is a city that struggles with air pollution. The leading cause of this pollution is traffic, with emissions from vehicles being the main source of air pollution in the city. In addition to traffic, other sources of air pollution in Brussels include domestic heating, energy production, industry, and agriculture. The air pollution in Brussels has serious consequences for the health of its residents, as it is linked to respiratory and cardiovascular diseases, asthma, cancer, and even premature death. While there have been some improvements in air quality in recent years, Brussels still has a way to go to ensure that its residents are breathing safe and healthy air.
| Characteristics | Values |
|---|---|
| Air pollution causes | Vehicle emissions, domestic heating, road transport, energy production, industry, and agriculture |
| Pollutants | Particulate matter (PM10 and PM2.5), nitrogen dioxide (NO2), nitrogen oxide (NOx), carbon monoxide (CO), ground-level ozone (O3) |
| Air quality in 2019 | "Good" in July and December, "Moderate" for the remaining 10 months |
| Air quality in early 2021 | "Moderate" with a US AQI reading of 63 |
| Pollutant concentrations in early 2021 | PM2.5 - 18 µg/m³, O3 - 55 µg/m³, NO2 - 11 µg/m³ |
| Air quality in 2022 | Met European Union standards |
| Air quality trends | Improving, but still below average compared to similar EU countries |
| Health impacts | Linked to respiratory and cardiovascular diseases, asthma, cancer, type 2 diabetes, childhood obesity, Alzheimer's disease, perinatal conditions, and more |
| Mortality impacts | Leading cause of premature deaths in Europe, with 422,000 annual deaths in the EU |
| Brussels-specific impacts | 930 premature deaths per year in the Brussels Capital Region |
| Pollution sources | Traffic, residential heating, agriculture (including intensive livestock), industrial activity, combustion of fossil fuels |
| Pollution thresholds | Established by the Brussels Capital Region to inform the public and implement measures |
| Car-free initiatives | Motoring prohibited within 19 municipalities in the Brussels-Capital Region on certain days |
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What You'll Learn
Air pollution and health
Air pollution has severe consequences for the health of Brussels' residents. According to a study, "PM2.5 and NO2 air pollution are responsible for more than 930 premature deaths per year in the Brussels Capital Region". These pollutants are mainly produced by the combustion of fossil fuels for heating, road transport, and industrial activity. The concentration of these pollutants is monitored daily by the Brussels Capital Region to prevent the associated health risks, which include respiratory and cardiovascular diseases.
Brussels regularly experiences pollution peaks, which can impact the health and well-being of its citizens. The city has established pollutant concentration thresholds that trigger public information and, in some cases, intervention measures. The main sources of air pollution in Brussels are traffic and emissions from vehicles, particularly fine particles of PM2.5 and nitrogen oxide (NOx). The problem is exacerbated by the presence of two four-lane highways that experience frequent traffic jams.
To address these issues, Brussels has implemented measures to reduce car traffic, improve public transport, and promote cycling and pedestrian mobility. By 2023, it is expected that car traffic in the city centre will decrease by 27%, while the number of cyclists is projected to increase by 36%. These initiatives are already showing positive results, with a significant reduction in car traffic on the small ring road and within the Pentagon low-traffic neighbourhood.
While there have been improvements in air quality in Brussels, the city still faces challenges. Exposure to PM2.5 and PM10 particulate matter remains a concern, with a considerable portion of the population breathing contaminated air. The health impacts of air pollution are serious, including the development of chronic diseases such as asthma, cardiovascular disease, and cancer. Additionally, NO2 exposure is linked to adverse perinatal conditions and can trigger asthma attacks in children, leading to increased hospitalisations.
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Pollutant sources
Brussels, the capital of Belgium, has poor air quality by international standards. It ranks below average compared to similar EU countries for most pollutants. The city's air quality is mainly affected by pollutant sources such as traffic, domestic heating, and industrial activity.
Traffic
Traffic is a significant contributor to air pollution in Brussels. The emissions from vehicles, particularly the combustion of fossil fuels, release harmful pollutants such as nitrogen oxides (NOx), nitrogen dioxide (NO2), and carbon monoxide (CO). The presence of these pollutants is heightened during traffic jams, with the concentration of NO2 being of particular concern. Brussels has implemented initiatives to reduce car traffic, such as car-free days and the development of low-traffic neighbourhoods, which are showing positive results in improving air quality.
Domestic Heating
Residential heating, particularly the use of fossil fuels and wood products for domestic heating, is a significant source of air pollution in Brussels. This is especially prominent during the winter months, creating what is known as "winter pollution peaks". The combustion of these fuels releases fine particles (PM2.5 and PM10) and contributes to the formation of nitrogen dioxide (NO2).
Industrial Activity
Industrial activity, including the combustion of fossil fuels and the release of volatile organic compounds (VOCs), contributes to air pollution in Brussels. This activity, along with road traffic, is a source of ground-level ozone (O3), which is more concentrated in rural areas due to the presence of secondary pollutants.
Other Sources
Other sources of air pollution in Brussels include agriculture, energy production, and population density. The Flemish Region, which has higher population density and more intensive agriculture, contributes to higher pollution levels in Brussels. Additionally, energy production and industry are identified as significant sources of air pollution in EU countries, which likely impact Brussels as well.
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Traffic and transport
In cities, traffic is one of the worst sources of air pollution, and Brussels is no exception. Vehicle emissions are the main source of air pollution in the city, with emissions of nitrogen oxide (NOx) being a particular problem. The concentration of pollutants such as carbon monoxide (formed by the incomplete combustion of fossil fuels) is monitored daily by the Brussels Capital Region to prevent the associated risks of poor air quality, which include respiratory and cardiovascular diseases.
Brussels has implemented a new traffic scheme that has successfully reduced car traffic within the Pentagon, improved public transport, and made residential areas more accessible and calmer. As a result of this scheme, there has been a significant decrease in car traffic on the small ring road and through the Pentagon, with a 20% reduction in car traffic on the former and 36% fewer cars crossing the latter. By 2023, it is expected that 27% fewer cars will be crossing the city centre, while the number of cyclists is predicted to increase by 36%.
In addition to these efforts, Brussels has also introduced car-free days, during which motoring is prohibited within the entire Brussels-Capital Region, covering 19 municipalities. On these days, public transport is free of charge, and various events are organized throughout the city, including organic markets, concerts, and pony rides.
Despite these measures, Brussels still experiences pollution peaks, which can have negative consequences for both human health and the environment. The city has established pollutant concentration thresholds to address this issue, informing the public and implementing intervention measures when certain levels are reached.
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Air quality standards
Brussels, the de facto capital of Europe, is one of the most congested cities in the world. The city has been battling air pollution for years, with levels of particulate matter and nitrogen dioxide (NO2) exceeding EU and WHO limits.
The air quality in Brussels is monitored by the Brussels Environment and Climate Administration, which operates a network of monitoring stations across the region. The administration measures the concentration of various pollutants in the air, including
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Public health interventions
Brussels, the capital of Belgium, has been facing a significant air pollution problem, with severe health implications for its residents. The city's air quality has been a growing concern, prompting discussions on effective public health interventions to tackle this issue. Here are some measures that could be implemented to address the problem:
Emission Control Measures:
- Implement stricter emission standards for vehicles, especially for heavy-duty diesel vehicles and older, more polluting cars. This could include regular vehicle inspections and maintenance to ensure they meet emission norms.
- Encourage the use of electric or hybrid vehicles by offering incentives and subsidies to individuals and businesses. This could help reduce emissions from the
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Frequently asked questions
Poor air quality in Brussels is an important contributor to disease and premature mortality. According to a study, PM2.5 and NO2 air pollution are responsible for more than 930 premature deaths per year in the region. NO2 exposure is associated with perinatal conditions in women and is also linked to the development of asthma in children.
The biggest sources of air pollution in Brussels are domestic heating, road transport, energy production, industry, and agriculture. In cities, traffic is one of the worst sources of air pollution.
The Brussels Capital Region has established various pollutant concentration thresholds, and the public is informed when these levels are reached. In addition, the city has implemented a new traffic scheme, which has reduced car traffic, improved public transport, and made residential areas calmer and more accessible.
