24 Hour Summary, based on data provided by Environment Agency
Here you can view the detailed data behind the latest measurement summary displayed on UK-AIR, and also a summary of information that has been displayed over the previous 24 hours. The detailed data tabulated below are from monitoring sites within the AURN. Graphs of hourly monitoring data are also available to view as weekly time series. You can also subscribe to this information as an email alert.
- View the legend
- Maximum pollutant levels displayed on UK-AIR for the 24 hour period up to 2pm Mon 25th May 2026
Greater London
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Camden Kerbside Timeseries Graph |
n/m | 47 (1 Low) | n/m | 24 (3 Low) | 39 (3 Low) *1 | 25/05/2026 14:00:00 |
| Ealing Horn Lane Timeseries Graph |
n/m | n/m | n/m | n/m | 40 (3 Low) *1 | 25/05/2026 14:00:00 |
| Haringey Roadside Timeseries Graph |
n/m | 46 (1 Low) | n/m | n/m | n/m | 25/05/2026 02:00:00 |
| London A406 N Circular Timeseries Graph |
n/m | n/m | n/m | 18 (2 Low) | n/m | 25/05/2026 10:00:00 |
| London Bexley Timeseries Graph |
n/m | 90 (2 Low) | n/m | 18 (2 Low) | 25 (2 Low) *2 | 25/05/2026 09:00:00 |
| London Bloomsbury Timeseries Graph |
124 (5 Moderate) | 56 (1 Low) | 2 (1 Low) | 17 (2 Low) | 27 (2 Low) *2 | 24/05/2026 20:15:00 |
| London Farringdon Street Timeseries Graph |
n/m | 69 (2 Low) | n/m | 22 (2 Low) | n/m | 25/05/2026 10:00:00 |
| London Haringey Priory Park South Timeseries Graph |
148 (6 Moderate) | 35 (1 Low) | n/m | 16 (2 Low) | 26 (2 Low) *2 | 25/05/2026 14:00:00 |
| London Harlington Timeseries Graph |
117 (4 Moderate) | 48 (1 Low) | n/m | 14 (2 Low) | 27 (2 Low) *2 | 25/05/2026 14:00:00 |
| London Hillingdon Timeseries Graph |
120 (4 Moderate) | 67 (1 Low) | n/m | 18 (2 Low) | 31 (2 Low) *2 | 25/05/2026 14:00:00 |
| London Honor Oak Park Timeseries Graph |
151 (6 Moderate) | n/m | n/m | 17 (2 Low) | 26 (2 Low) *2 | 25/05/2026 10:00:00 |
| London Marylebone Road Timeseries Graph |
115 (4 Moderate) | 63 (1 Low) | 5 (1 Low) | 21 (2 Low) | 39 (3 Low) *1 | 24/05/2026 19:45:00 |
| London N. Kensington Timeseries Graph |
140 (5 Moderate) | 50 (1 Low) | 3 (1 Low) | 17 (2 Low) | 27 (2 Low) *2 | 25/05/2026 09:00:00 |
| London Norbury Manor School Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 26 (2 Low) *2 | 25/05/2026 14:00:00 |
| London Teddington Bushy Park Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 28 (2 Low) *2 | 25/05/2026 03:00:00 |
| London Westminster Timeseries Graph |
126 (5 Moderate) | 63 (1 Low) | n/m | n/m | n/m | 24/05/2026 20:00:00 |
| Southwark A2 Old Kent Road Timeseries Graph |
n/m | 65 (1 Low) | n/m | n/m | 43 (3 Low) *1 | 24/05/2026 24:00: |
» View the latest regional summary for this region
Legend
- n/m means that the pollutant is not measured at that site
- n/a means that no data were recorded for the period
- *1: measurements are PM10 BAM 1020 heated
- *2: measurements are PM10 FIDAS
- *3: measurements are PM10 SEQ 47/50