Could you please provide details of the locations of the monitoring centres you use to determine the levels of pollution that affect the area within the congestion charging zone that have led to the recent introduction of additional fees for those entering the ULEZ area.

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TfL Ref: FOI-0174-1920

Thank you for your email received by TfL on 11^th April 2019 asking for information about the monitoring of air pollution in relation to the Congestion Charge zone.

Your request has been considered in accordance with the requirements of the Environmental Information Regulations and our information access policy. 

The requested information can be found online through the following link:

https://maps.london.gov.uk/air-quality/

You may also find useful, related information via the followling links:

https://www.london.gov.uk/what-we-do/environment/pollution-and-air-quality

https://data.london.gov.uk/dataset/london-average-air-quality-levels

https://www.london.gov.uk/sites/default/files/air_quality_monitoring_guidance_january_2018.pdf

If this is not the information you are looking for, or if you are unable to access it for any reason, please do not hesitate to contact me.

Please see the attached information sheet for details of your right to appeal as well as information on copyright and what to do if you would like to re-use any of the information we have disclosed.

Yours sincerely,

David Wells

FOI Case Officer

FOI Case Management Team

General Counsel

Transport for London

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