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Latest air quality summary
Number of monitoring sites in each pollution band
Heathrow Airwatch was last updated at 05:00 on Friday 29th March 2024
- Low21
- Moderate0
- High0
- Very High0
- No Data1
- 22
Total monitoring sites
Low (1-3)
Moderate (4-6)
High (7-9)
Very High (10)
Offline | Find out more about the air pollution index and bandings
Offline | Find out more about the air pollution index and bandings
Hounslow Boston Manor Park
Sorry, no data are available for this monitoring site on the date selected
This monitoring site closed on 05/03/2020
Note: These results are based on provisional data. The data are presented in graphical form based on the highest pollutant measured at each site.