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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 Tuesday 26th January 2021
- Low22
- Moderate0
- High0
- Very High0
- No Data3
- 25
Total monitoring sites





Heathrow Bath Road
Parameter | Pollution Band | Concentration | Period |
---|---|---|---|
PM2.5 Particulate matter (PM2.5) Updated: 20/08/2020 01:00 |
No Data | 24 Hour mean | |
PM10 Particulate matter (PM10) Updated: 20/08/2020 01:00 |
No Data | 24 Hour mean | |
Oxides of Nitrogen (NOXasNO2) Updated: 20/08/2020 01:00 |
No Data | hourly mean | |
Nitrogen dioxide (NO2) Updated: 20/08/2020 01:00 |
No Data | hourly mean | |
Nitric Oxide (NO) Updated: 20/08/2020 01:00 |
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.