• Today : Light winds and warm sunshine may lead to localised pockets of Moderate air pollution building up in a few spots of England and Wales, with a smaller risk elsewhere in the UK. However, air pollution levels will generally remain Low for most areas.
  • Tomorrow : Localised Moderate levels remain possible Wednesday. However this is uncertain due to a broad area of rain moving into eastern parts, before spreading further west, keeping levels Low for most.
  • Outlook : Generally Low levels across the UK through the period, however light winds and warm sunshine will bring the potential for further pockets of Moderate levels to develop, mainly on Saturday.

Issued at 21/05/2024 5am

Forecast provided by the Met Office

Measurement summary data provided by the Environment Agency

Updated at 21/05/2024 12:00

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Summary from 164 monitoring sites.

Generated at


Number of monitoring sites in each pollution band. Values are based on pollution level measured for the latest hour and are provisional.

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