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Latest air quality summary

Number of monitoring sites in each pollution band

Heathrow Airwatch was last updated at 11:00 on Saturday 20th April 2024

  • Low22
  • Moderate0
  • High0
  • Very High0
  • No Data0
  • 22

    Total monitoring sites

Green Low (1-3) Orange Moderate (4-6) Red High (7-9) Purple Very High (10)
Grey Offline | Find out more about the air pollution index and bandings

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Slough Town Centre A4

Sorry, no data are available for this monitoring site on the date selected

This monitoring site closed on 18/11/2019

Note: These results are based on provisional data. The data are presented in graphical form based on the highest pollutant measured at each site.