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Clean Air Day - 8 October 2020

Clean Air Day is the UK's largest air pollution campaign, engaging thousands of people at hundreds of events, and reaching millions more through the media. Clean Air Day is on 8 October 2020.

Coordinated by Global Action Plan, Clean Air Day brings together communities, businesses, education and the health sector:

  • to improve public understanding of air pollution, both indoors and outdoors
  • to build awareness of how air pollution affects our health
  • to explain some of the easy things we can all do to tackle air pollution, helping to protect the environment and our health too.

In 2019 more than 3,700 organisations and hundreds of thousands of individuals took part in 614 events across the UK. The campaign generated more than 2000 media items, and 45,000 social media posts. Central to the Clean Air Day campaign is the
UK’s leading public information portal on air pollution and health:


Costs of air pollution

Air pollution harms the health of millions, particularly young children and those with lung and heart problems. It's a public health issue on a par with cancer and heart disease - and costs the UK some £20 billion a year.

Through simple messages, such as walking or cycling to school, we're inspiring thousands of people up and down the country to take part in events in their schools, communities or at work.

Graphic illustrating that indoor air pollution can be 3.5 times worse than outdoor air pollution.

About Clean Air Day 2019

The 2019 campaign, in the run up to Clean Air Day on 20 June, got off to a brilliant start with our story revealing that indoor air pollution is 3.5 times worse than outdoor air pollution. Our data showed that outdoor air pollution adds to indoor air pollution, building up in the home, and taking longer than outdoors to disperse. In one case the ultra-fine particle pollution peaked at 560 times higher than outdoors.

Groundbreaking research

Over the following months we went on to reveal new research about:

  • dangerous levels of formaldehyde and other pollutants in our homes
  • the percentage on unborn babies exposed to increased toxic air pollution
  • the need for a collated resource for air pollution - the Clean Air Hub
Two young men on their way to college, with bicycles, standing in a green field in the sunshine

The campaign peaked on Clean Air Day itself, with events up and down the country, Global Action Plan staff appearing on TV and radio news to talk about air pollution, and #CleanAirDay trending on Twitter.


Many people took up the challenge to walk or cycle to work, college or school. The Christie, Manchester offered cyclists breakfast, hundreds of people pledged to take air pollution busting steps on Clean Air Day. 


Play streets took place across the country, entertaining 27,500 children and adults alike. Public transport providers gave travel discounts. And in Wales theatre performances took place in Caerphilly Castle. 


Thousands taking part in Clean Air Day

The 2019 campaign clocked up more than 2,000 news or broadcast items since the beginning of April. This, combined with social media, meant we had a staggering reach of more than one billion. At least 3,700 organisations engaged in the day and there were more than 600 events.


Most important of all, however, is that we can be sure that the air pollution message, and what we can do to tackle it, is now firmly in the mind of many many more people.

To get involved with our air quality work, email Larissa Lockwood

To get involved with our air quality work, email Larissa Lockwood