Heathrow is committed to improving local air quality and reducing emissions from airport operations.
Improving air quality has been a long-standing priority for Heathrow. Over the past decade, we have taken practical steps to cut emissions from our operations and support cleaner air both on and around the airport.
Our monitoring stations show clear progress:
NO2 levels have fallen by 39%
PM10 levels have fallen by 37%
PM2.5 levels have fallen by 35%
Measurements compare 2014 and 2024 annual mean data
Levels are now below legal limits, including on the runway
We continue to monitor air quality closely and focus on further reductions where we can.
Learn more about our approach to improving air quality in our latest action plan updated March 2026.
View the latest air quality information for the Heathrow area on Airwatch. Get real time updates, see how Heathrow is improving air quality and receive alerts when pollution exceeds guidelines daily.
Learn how Heathrow works with local councils, agencies and community groups to monitor and improve air quality through the Council for the Independent Scrutiny of Heathrow Airport.
