Latest measured levels based on data provided by the 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
- Pollutant levels recorded for the hour up to 7am Wed 22nd Apr 2026
South East
| Latest measured levels based on data provided by the 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 |
| Aylesbury A4157 Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 22/04/2026 07:00:00 |
| Brighton Preston Park Timeseries Graph |
59 (2 Low) | 10 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) *2 | 22/04/2026 07:00:00 |
| Chatham Roadside Timeseries Graph |
n/m | 14 (1 Low) | n/m | 8 (1 Low) | 28 (2 Low) *1 | 22/04/2026 07:00:00 |
| Chilbolton Observatory Timeseries Graph |
79 (3 Low) | 8 (1 Low) | 1 (1 Low) | 8 (1 Low) | 15 (1 Low) *2 | 22/04/2026 07:00:00 |
| Eastbourne Timeseries Graph |
64 (2 Low) | 12 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 22/04/2026 07:00:00 |
| Farnborough Cherrywood Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 17 (2 Low) *2 | 22/04/2026 07:00:00 |
| Horley Timeseries Graph |
n/m | 13 (1 Low) | n/m | 9 (1 Low) | 17 (2 Low) *2 | 22/04/2026 07:00:00 |
| Lullington Heath Timeseries Graph |
70 (3 Low) | 10 (1 Low) | 2 (1 Low) | 9 (1 Low) | 14 (1 Low) *2 | 22/04/2026 07:00:00 |
| Maidstone Upper Stone Street Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 27 (2 Low) *2 | 22/04/2026 07:00:00 |
| Milton Keynes Civic Centre Timeseries Graph |
62 (2 Low) | n/m | n/m | 8 (1 Low) | 15 (1 Low) *2 | 22/04/2026 07:00:00 |
| Oxford Centre Roadside Timeseries Graph |
n/m | 12 (1 Low) | n/m | n/m | n/m | 22/04/2026 07:00:00 |
| Oxford St Ebbes Timeseries Graph |
75 (3 Low) | 6 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 22/04/2026 07:00:00 |
| Portsmouth Timeseries Graph |
71 (3 Low) | 26 (1 Low) | n/m | 8 (1 Low) | 18 (2 Low) *2 | 22/04/2026 07:00:00 |
| Portsmouth Anglesea Road Timeseries Graph |
n/m | 10 (1 Low) | n/m | 9 (1 Low) | 19 (2 Low) *2 | 22/04/2026 07:00:00 |
| Reading London Road Timeseries Graph |
n/m | 38 (1 Low) | n/m | n/m | 20 (2 Low) *1 | 22/04/2026 07:00:00 |
| Reading New Town Timeseries Graph |
70 (3 Low) | 14 (1 Low) | n/m | 8 (1 Low) | 14 (1 Low) *2 | 22/04/2026 07:00:00 |
| Reading Rose Kiln Lane Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 22/04/2026 07:00:00 |
| Rochester Stoke Timeseries Graph |
82 (3 Low) | 13 (1 Low) | 1 (1 Low) | 10 (1 Low) | 18 (2 Low) *2 | 22/04/2026 07:00:00 |
| Slough Windmill Bath Road Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 22 (2 Low) *2 | 22/04/2026 07:00:00 |
| Southampton A33 Timeseries Graph |
n/m | 12 (1 Low) | n/m | 8 (1 Low) | 14 (1 Low) *2 | 22/04/2026 07:00:00 |
| Southampton Centre Timeseries Graph |
77 (3 Low) | 15 (1 Low) | 4 (1 Low) | 9 (1 Low) | 18 (2 Low) *2 | 22/04/2026 07:00:00 |
| Storrington Roadside Timeseries Graph |
n/m | 27 (1 Low) | n/m | 8 (1 Low) | 17 (2 Low) *2 | 22/04/2026 07:00:00 |
| Worthing A27 Roadside Timeseries Graph |
n/m | 25 (1 Low) | n/m | 11 (1 Low) | n/m | 22/04/2026 07:00:00 |
| Worthing East Ten Acres Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 18 (2 Low) *2 | 22/04/2026 07:00:00 |
» 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