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Latest air quality summary
Number of monitoring sites in each pollution band
Heathrow Airwatch was last updated at 21:00 on Monday 3rd August 2020
- Low22
- Moderate0
- High0
- Very High0
- No Data3
- 25
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
London Hillingdon
| Parameter | Pollution Band | Concentration | Period |
|---|---|---|---|
| Ozone (O3) Updated: 03/08/2020 14:00 |
No Data | 8 Hour mean | |
| Oxides of Nitrogen (NOXasNO2) Updated: 03/08/2020 12:00 |
No Data | hourly mean | |
| Nitrogen dioxide (NO2) Updated: 03/08/2020 12:00 |
No Data | hourly mean | |
| Nitric Oxide (NO) Updated: 03/08/2020 12:00 |
No Data | hourly mean |
Note: These results are based on provisional data. The data are presented in graphical form based on the highest pollutant measured at each site.
