The number of monitoring sites in each pollution band. Values are based on pollution level measured for the latest hour and are provisional.
1 2 3 Low
4 5 6 Moderate
7 8 9 High
10 Very high
Last updated: 03:00 on Monday 21st September 2020
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Citizen Science lets you collect and analyse air pollution data as a school project. This enables you to map your school's data.
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Use the Clean the Air emissions calculator to find out the impact your journey to school has on the environment.