Bronte Wells
Air pollution is a serious issue, with an estimated 40,000 early deaths per year in the UK attributed to poor air quality. It is important to be aware of the pollution levels in your local area, especially if you have existing health conditions. Fortunately, there are now several tools available that allow you to check the pollution levels on your street. By entering your postcode, you can access detailed information about the air quality in your local area, including pollution levels and any potential health risks. This information can help you make informed decisions about your exposure to air pollution and take any necessary precautions to protect your health.
| Characteristics | Values |
|---|---|
| Air pollution levels in London | Likely to remain above legal limits for the next decade if no action is taken |
| Areas with the worst pollution in London | Marylebone Road, Hyde Park Corner, Brixton Road |
| Pollution levels in Britain | Improving, but worse than many other countries |
| Pollution levels outside of Britain | Worse in many other countries, especially across Asia |
| Face masks | Basic face masks are ineffective; heavy-duty versions are cumbersome |
| Areas to avoid | Busy roads, traffic lights, areas with stationary traffic |
| Areas to seek out | Side roads |
| Air pollution-related deaths in the UK | 40,000 per year |
| Air pollution-related deaths in London | 4,000 per year |
| Air pollution-related health costs in London | £20 billion per year |
| Air pollution-related health issues | Lung and heart conditions, breast cancer, diabetes |
| Air pollution monitoring tools | Clean Air Hub, Defra's UK air pollution forecast map, Imperial College London's Air Quality widget, Breathe London network, LondonAir website |
| <co: 2,7>Air pollution rating scale | 1 (least polluted) to 6 (most polluted) |
| Percentage of Great Britain postcodes in the least polluted category | 80% |
| Percentage of Great Britain postcodes in the second-least polluted category | 19% |
| Percentage of Great Britain postcodes in the fourth and fifth most polluted categories | 1% |
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What You'll Learn
How to check your street's pollution levels
There are several ways to check the pollution levels of your street. Many of these methods involve using online tools and platforms, which often provide real-time data and maps. Here are some ways to check the air quality and pollution levels in your locality:
Air Quality Index (AQI)
The Air Quality Index (AQI) is a comprehensive tool that provides real-time air quality data for over 80 countries. It measures various air pollutants, including particulate matter (PM2.5 and PM10), ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2), and carbon monoxide (CO) emissions. The AQI offers a detailed breakdown of pollution levels, with colour-coded categories indicating the potential health risks associated with the measured pollution levels.
Airly Map
Airly is a smart air quality monitoring system that provides localised data on outdoor air pollution. It uses small sensors to measure parameters such as PM1, PM2.5, PM10, temperature, pressure, and humidity. The Airly Map presents this data in the form of a heatmap, with colours ranging from green (good air quality) to red (health-threatening air quality). The system also provides forecasts with high accuracy, allowing users to anticipate potential smog or high pollution events.
AirNow.gov
AirNow.gov is a useful resource for those in the United States. It provides an interactive map that displays air quality data across the country. The map can be used to check the impact of wildfire smoke on air quality in specific locations. While it focuses on the U.S., it also offers an International navigation tab for exploring data from other regions.
AQI.in
AQI.in is India's leading platform for air quality monitoring. It offers real-time air quality data and solutions for various establishments, including schools, hospitals, retail stores, and construction sites. The platform provides tools like air monitors, drones, and outdoor air purifiers to help combat air pollution effectively.
Pocket Monitor
For those who want instant air quality insights on the go, the Pocket Monitor is a handy device. It connects to your air quality devices and provides personalised health advice based on current AQI data.
By utilising these tools and platforms, you can stay informed about the pollution levels in your street and take appropriate actions to protect your health and well-being.
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The health implications of air pollution
Air pollution is a major threat to global health and prosperity. It is responsible for more than 6.5 million deaths each year globally, a number that has increased over the past two decades. Air pollution is a mix of hazardous substances from both human-made and natural sources. It is composed of contaminants such as dust, fumes, gas, mist, odour, smoke or vapour, in quantities and durations that can be harmful to human health.
The main pathway of exposure from air pollution is through the respiratory tract. When we breathe in air pollutants, they can enter our bloodstream and contribute to coughing or itchy eyes and cause or worsen many breathing and lung diseases, leading to hospitalizations, cancer, or even premature death. Fine particulate matter, such as PM2.5, is of particular concern as it can be inhaled deeply into lung tissue and contribute to serious health problems. These fine particles can penetrate deep into the lungs and even make their way into the bloodstream, causing systemic damage to tissues and cells. Short-term exposure to fine particles in the air can aggravate lung disease, trigger asthma attacks, and acute bronchitis, and may also increase the risk of respiratory infections. Over time, breathing in fine particles increases the chances of developing chronic obstructive lung disease (COPD), chronic bronchitis, cardiovascular disease, or lung cancer.
Ozone, an atmospheric gas, is another pollutant of concern. Ground-level ozone is a powerful lung irritant that can cause inflammation and other damage with both short-term and long-term exposure. When ozone levels are high, many people experience breathing problems such as chest tightness, coughing, and shortness of breath, and even healthy young adults may experience respiratory symptoms.
In addition to respiratory issues, air pollution has also been linked to adverse birth outcomes, with maternal exposure associated with low birth weight, pre-term birth, and small gestational age births. Furthermore, a growing body of evidence suggests that air pollution may also impact diabetes and neurological development in children.
Overall, the health impacts of air pollution are far-reaching and pose a significant threat to public health, affecting individuals from all walks of life.
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Pollution levels in London
London has long struggled with poor air quality, which poses a significant health risk to its residents. The city is often found to have some of the highest air pollution levels in the UK, with about 4,000 premature deaths per year attributed to air pollution. A 2015 study by King's College London estimated that PM2.5 pollution contributes to 3,500 premature deaths annually, while NO2 contributes to 5,900. This amounts to a total health burden of 9,400 premature deaths per year, with an economic cost of up to £3.7 billion.
The main sources of London's air pollution are road transport and domestic and commercial heating systems. Transport, in particular, significantly contributes to NO2 levels, with roadside locations often recording higher concentrations of this toxic gas. NO2 exacerbates asthma, impedes lung development, and increases the risk of lung cancer. It is also associated with adverse health outcomes like strokes and other cancers.
Children and the elderly are especially vulnerable to the health impacts of air pollution. A concerning statistic reveals that 25% of schoolchildren in London attend schools in areas where NO2 levels exceed healthy and legal limits. Furthermore, these children are exposed to five times higher levels of air pollution during their walk to school than at other times of the day.
While London has made progress since the 'Great Smog' of 1952, the city continues to face challenges in improving its air quality. However, there is some positive news. The expansion of the ultra-low emission zone (Ulez) has led to a dramatic fall in London's levels of deadly pollutants. Roadside nitrogen dioxide (NO2) levels have decreased by 27% across London since the Ulez was introduced in 2019, and air quality has improved at 99% of monitoring sites across the city. The scheme has driven down pollution, removed old polluting cars from the roads, and brought cleaner air to millions.
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How to reduce your exposure to air pollution
While air pollution is largely caused by factors beyond individual control, there are still some steps you can take to reduce your exposure to it. Here are some ways to protect yourself from unhealthy air:
Stay indoors when possible
On days with high air pollution, staying indoors can help reduce your exposure to outdoor air pollution. You can also limit physical exertion, especially outdoors or near sources of air pollution, as this can increase the amount of polluted air you inhale.
Improve indoor air quality
It's important to ensure that the air you breathe indoors is clean. High-efficiency filtration systems can remove over 90% of particles from incoming outdoor air, including fine particulate matter, ultrafine particles, and black carbon. Air filters can also help clean the air inside your home or vehicle.
Reduce energy consumption
Generating electricity and using other energy sources contribute to air pollution. By reducing your energy use, you can help improve air quality and curb greenhouse gas emissions. This can be done by using energy-efficient appliances, turning off electrical appliances when not in use, and setting air conditioners no lower than 78 degrees.
Choose alternative modes of transportation
Vehicle exhaust is a major source of air pollution. Opting for walking, biking, carpooling, or using public transportation can help reduce your exposure to traffic pollution. Electric vehicles are also a cleaner alternative to traditional cars.
Avoid burning firewood, trash, or leaves
Burning firewood and trash are major sources of particle pollution. Smoke from backyard fires can negatively impact the air quality for hundreds of people nearby, especially those with asthma or lung conditions. If you must have a campfire, keep it small and brief, and only burn dry firewood.
Use respirators
In urban areas with high air pollution, wearing respirators can help reduce exposure to air pollutants. However, it's important to choose the right type of respirator with the appropriate filter material to effectively remove particulate matter and gaseous pollutants.
It's worth noting that while these measures can help reduce your exposure to air pollution, they may not completely eliminate the risks associated with living in areas with high pollution levels. Advocating for policies that support cleaner transportation, energy-efficient homes, improved waste management, and better urban planning can have a more significant impact on reducing air pollution in the long run.
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Face masks: do they help with pollution?
Face masks have become a common sight worldwide, initially driven by the COVID-19 pandemic. But do they help with air pollution?
Air pollution is a global issue that affects the health and well-being of millions of people worldwide. The World Health Organization (WHO) estimates that approximately 4.2 million premature deaths occur annually due to outdoor air pollution. This complex issue, caused by a mixture of harmful particles and gases, has severe consequences on human health.
Air pollution is made up of particles and gases. Gases include ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, and a large group of chemicals known as volatile organic compounds (VOCs). While gases can have harmful effects, research indicates that we should be most concerned about the negative health impacts of fine particles – those under 2.5 microns in size. These fine particles, known as PM2.5, are 1/30th the diameter of a human hair. They penetrate deepest into the lungs and also enter the blood circulation, proving fatal for 7 million people annually. They also cause asthma, COPD, lung cancer, heart attacks, stroke, birth defects, low birth weight in babies, and behaviour problems.
Studies have shown that masks can be effective in reducing health risks from particulate matter pollution. For example, a study conducted in Shenyang, China, found that face masks were 80% effective in protecting against particulate matter pollution. The type of mask also makes a difference. N95 masks, for instance, are designed to filter out at least 95% of airborne particles larger than 0.3 microns, making them effective against small particles from air pollution. Masks with high filtration efficiency, such as N95 or KN95 masks, can trap fine particulate matter, reducing exposure to harmful particles that can penetrate deep into the lungs and the bloodstream. Masks can also filter out common allergens like pollen and dust, preventing allergic reactions such as sneezing, itching, or respiratory distress.
However, it is important to note that not all masks are created equal. Basic, cheap, cotton masks don't do much to keep pollution out. In many cases, a scarf over your face would be just as effective. The key is to find a mask that will fit tightly on your face – any gaps between your skin and the mask will just let pollution in. Masks with replaceable filters lose effectiveness over time if the filters are not replaced, as clogged filters fail to block pollutants. Touching or removing the mask frequently can also lead to contamination and reduce its protective benefits.
Specialised masks with activated carbon layers can reduce exposure to harmful gases like nitrogen dioxide and sulphur dioxide, commonly emitted by vehicles. Some masks, especially cloth masks, may not filter fine particulate matter (PM2.5) or toxic gases effectively, limiting their protection.
Overall, masks can be a cost-effective measure to reduce health damage due to air pollution, especially when combined with a good fit to minimize inward leakage.
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Frequently asked questions
You can find out about the pollution levels on your street by entering your postcode on the BBC website. The data is provided by EarthSense and gives you a score from 1 to 6, with 1 being the least polluted and 6 being the most polluted.
Category 1: The air in your area is generally clean and well below the legal levels for pollutants such as NO2.
Category 2: The air in your area is generally cleaner than the regulatory limits and should not cause health concerns except in exceptional weather conditions.
Category 3: The annual average concentration of pollutants in this area is likely to be marginally above the regulatory guidelines.
Category 4: There are likely to be regular episodes of moderate pollution in these areas, with annual average concentrations above regulatory guidelines.
Category 5: Pollution concentrations in this area are likely to frequently exceed WHO guidelines and regulatory limits.
If you are walking, it is recommended to stick to side roads as they are cleaner because there is less traffic. You can also stick to the side of the road where traffic is flowing downhill, as this will be the cleaner side.
Air pollution has been linked to life-shortening lung and heart conditions, breast cancer, and diabetes. It is estimated to contribute to 40,000 early deaths per year in the UK, particularly in people with pre-existing heart and lung issues.
Yes, there are several resources available for monitoring air pollution levels. The Clean Air Hub provides news stories, case studies, and information on UK air pollution forecasts. You can also visit the Department for Environment, Food & Rural Affairs (Defra) website, which has an interactive map showing the latest air pollution levels across the UK. If you live in London, you can use the Air Quality widget from Imperial College London or download the forecasting app from the LondonAir website.
