1st November 2022
At the end of September, the UK Government published their latest figures on air pollution data for across the country.
Sign up to email updates on our air pollution work
Air pollution is rebounding after the lockdowns.
Under existing laws, the UK Government has to report every year on where it is failing to meet legal limits for air pollution designed to protect people’s health. In the UK, the law on nitrogen dioxide (NO2) pollution – one of the most harmful pollutants – says annual average concentrations cannot exceed 40 µg/m3 (micrograms per cubic metre of air).
The latest figures show that, in 2021, 10 of the 43 national reporting zones suffered with illegal levels of NO2 pollution. This is twice as many as in 2020, when lockdowns led to a temporary dip in NO2 levels across the country.
But more importantly, as the weight of evidence on the health impacts of air pollution has increased, global health experts at the World Health Organization (WHO) last year radically overhauled their pollution guidelines. The WHO recommended guideline for annual average NO2 pollution is now 10 µg/m - four times lower than the UK’s current legal limit.
This means that while some parts of the UK may currently be registering levels of pollution that are within formal legal limits, the WHO tell a different story. Based on what scientists now know, the air in towns and cities across the UK is still putting people’s health in jeopardy.
|Zone name||Maximum modelled annual mean concentration (μg/m3)||No. times over WHO recommended level|
|Greater Manchester Urban Area||52||5.2|
|Greater London Urban Area||50||5|
West Midlands Urban Area (includes Birmingham)
|South Wales (includes Newport)||49||4.9|
|Sheffield Urban Area||45||4.5|
|Glasgow Urban Area||45||4.5|
|Nottingham Urban Area||44||4.4|
|West Yorkshire Urban Area||43||4.3|
|Liverpool Urban Area||43||4.3|
|Bristol Urban Area||43||4.3|
|Leicester Urban Area||39||3.9|
|The Potteries (includes Stoke on Trent)||39||3.9|
|Belfast Urban Area||39||3.9|
|South East (includes Bath)||39||3.9|
|Portsmouth Urban Area||38||3.8|
|Southampton Urban Area||38||3.8|
|Teesside Urban Area||37||3.7|
|Kingston upon Hull||37||3.7|
|Edinburgh Urban Area||36||3.6|
|Eastern (includes Cambridge and Norwich)||36||3.6|
|North West Merseyside||35||3.5|
|North East Scotland||35||3.5|
|Preston Urban Area||33||3.3|
|Bournemouth Urban Area||32||3.2|
|Southend Urban Area||32||3.2|
|Birkenhead Urban Area||31||3.1|
|Cardiff Urban Area||31||3.1|
|Swansea Urban Area||30||3|
|Reading/Wokingham Urban Area||28||2.8|
|Blackpool Urban Area||25||2.5|
To see areas covered by the zones, click here.
The 2021 data – the latest available – is still widely impacted by Covid-19. The Government admits that "the ongoing Covid-19 restrictions continued to reduce traffic on many roads in 2021". So next year’s data may be worse if action isn’t taken nationally and locally to tackle key sources such as road transport.
That’s very worrying given that air pollution affects the health and quality of life of people across the UK. In fact, it has been estimated that air pollution causes the equivalent of 40,000 early deaths every year.
The harms from air pollution have been well-documented by the scientific community. A recent example is a study showing that unborn foetuses have air pollution in their lungs and brains before they take their first breath.
Subscribe to our emails to join the fight for clean air
Air pollution is a huge problem across the UK, but it can be solved. Already we’ve taken the UK Government to court three times and won over their failure to protect the UK public from toxic air pollution.
Our court wins forced the government and local authorities to produce new air quality plans to show how they are going to meet legal limits in the shortest time possible. This has led to the introduction of Clean Air Zones across the country and over £800m being given to local authorities to provide help and support for people to move to cleaner forms of transport.
But recent developments show the government is looking to do away with the very legal protections that have led to this progress.
The UK Government has recently tabled a new proposed law called the Retained EU Law (Revocation and Reform) Bill. Its aim is to “revoke certain retained EU law” without any clear indication of whether or how these legal protections will be replaced. This could include the clean air laws that we can currently use to hold the government to account over dirty air.
Our lawyer Katie Nield said: “Instead of putting forward plans to get to grips with this public health crisis, ministers are presenting a deeply worrying Bill in Parliament which could rip out the legal protections in our statute book.
“Science has never been clearer on the harms caused by air pollution – even at low concentrations – and meanwhile our Government is proposing a future where we could have little protection from dirty air.”