Latest forecast

  • Today : Outbreaks of rain for some northern regions along with some breezy conditions will help keep air pollution levels low across all areas.
  • Tomorrow : Air pollution levels are expected to remain mostly Low on Friday, but some isolated pockets of moderate are possible across southern England.
  • Outlook : Mostly Low levels of air pollution are likely to continue through this period, but some areas of Moderate pollution are possible, especially in the southern half of England.

Issued at 21/05/2026 6am

Forecast provided by the Met Office

Measurement summary data provided by the Environment Agency

Updated at 21/05/2026 20:00

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Summary from 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.
Pollution Band Number of Sites

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