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Compliance Dashboard
Note: This dashboard only shows data from the monitoring sites at Heathrow Airport.
PM10
Summary (year to date)
| Monitoring Site | Annual mean (µgm-3) | Data Capture (%) | Number of days exceeding | Max daily exceedance (µgm-3) |
|---|---|---|---|---|
| Heathrow Green Gates | 11.8 | 99.6 | 0 | 0 |
| Heathrow Oaks Road | 13.2 | 99.6 | 0 | 0 |
| London Harlington | 14.2 | 96.9 | 1 | 51 |
| London Hillingdon Oxford Avenue | 23.0 | 98.1 | 5 | 60 |
Exceedance history (year to date)
| Number | Date | Monitoring Site | Max exceeding concentration (µgm-3) |
|---|---|---|---|
| 1 | 08/04/2020 | London Hillingdon Oxford Avenue | 55.0 |
| 2 | 09/04/2020 | London Harlington | 51.0 |
| 3 | 09/04/2020 | London Hillingdon Oxford Avenue | 60.0 |
| 4 | 16/04/2020 | London Hillingdon Oxford Avenue | 55.0 |
| 5 | 12/08/2020 | London Hillingdon Oxford Avenue | 55.0 |
| 6 | 15/09/2020 | London Hillingdon Oxford Avenue | 58.0 |
