Research and analysis

Particle Concentrations and Numbers (PCN) Network and Black Carbon Network technical reports

Annual technical reports for the Particle Concentrations and Numbers (PCN) Network and the Black Carbon Network, part of the UK's air pollution monitoring regime.

• From: Environment Agency and Department for Environment, Food & Rural Affairs
• Published: 22 October 2026

Documents

UK Particle Concentrations and Numbers and Black Carbon Networks: annual report 2025

PDF, 4.32 MB, 115 pages

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UK Particle Concentrations and Numbers and Black Carbon Networks: annual report 2024

PDF, 6.45 MB, 122 pages

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If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email defra.helpline@defra.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Details

The Particle Concentrations and Numbers (PCN) Network and the Black Carbon Network are part of the UK’s air pollution monitoring regime.

Annual technical reports provide information on the activities undertaken and data collected by the network in each reporting year.

The 2024 and 2025 reports are prepared by the National Physical Laboratory on behalf of the Environment Agency and the Department for Environment, Food and Rural Affairs.

Previous reports from the UK’s air pollution monitoring networks are available on the National Archives.