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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 | 12.4 | 92.5 | 0 | 0 |
| Heathrow Oaks Road | 12.4 | 99.7 | 0 | 0 |
| London Harlington | 12.2 | 99.7 | 0 | 0 |
| London Hillingdon Oxford Avenue | 26.0 | 80.7 | 4 | 58 |
Exceedance history (year to date)
| Number | Date | Monitoring Site | Max exceeding concentration (µgm-3) |
|---|---|---|---|
| 1 | 22/01/2023 | London Hillingdon Oxford Avenue | 58.0 |
| 2 | 14/02/2023 | London Hillingdon Oxford Avenue | 52.0 |
| 3 | 18/08/2023 | London Hillingdon Oxford Avenue | 56.0 |
| 4 | 06/09/2023 | London Hillingdon Oxford Avenue | 56.0 |
