• Today : Mainly Low, but areas of Moderate possible for parts of western England, much of Wales and parts of Scotland. Moderate levels also possible for urban locations due to light winds and settled conditions.
  • Tomorrow : Areas of Moderate air pollution possible for much Wales, and large parts of England, especially in the west. Some isolated Moderate areas also possible for parts of Scotland.
  • Outlook : Wednesday mainly Low but Moderate levels possible in Wales and western England. Thursday Low but locally Moderate levels. Generally Low Friday but Moderate for parts of western Scotland, central and western England and areas of Wales.

Issued at 19/04/2021 5am

Forecast provided by the Met Office

Measurement summary data provided by the Environment Agency

Updated at 19/04/2021 07:00

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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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