LAQN Monitoring Sites

All Species Carbon Monoxide (CO) Nitrogen Dioxide (NO2) Ozone (O3) PM10 Particulates PM2.5 Particulates Sulphur Dioxide (SO2) Include closed sites: 

Show Authorities (OS Data):  

Network Status
Sites on this webpage are currently part of the following networks:
LAQN – London Air Quality Network, QA/QC by Imperial College London
AURN – UK Automatic Urban and Rural Network, QA/QC by the Environment Agency’s QA/QC unit
AQE – Air Quality England, QA/QC by Ricardo Energy and Environment. Provided for information only, recent data should be downloaded from AQE to ensure latest dataset

Both networks meet the requirements of EU Directive 2008/50/EC and LAQM TG22