Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, with reference to the Answer of 15 May 2023 to Question 183293 on Air Pollution, what guidance his Department has published on the use of low-cost sensors in measuring outdoor air pollutants.

In addition to information provided in the Local Air Quality Management Technical Guidance 2022, Defra’s Air Quality Expert Group has provided advice, made available on UK Air, on the use of ‘low-cost‘ air pollution sensors. Defra also funded a project in 2022 to develop a publicly available specification (PAS) on the use of low-cost sensors, which is due to be published through the British Standards Institute imminently.