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 2pm Thu 18th Sep 2025
South West
| 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 |
| Barnstaple A39 Timeseries Graph |
n/m | n/m | n/m | 1 (1 Low) | 5 (1 Low) *2 | 18/09/2025 14:00:00 |
| Bath A4 Roadside Timeseries Graph |
n/m | 12 (1 Low) | n/m | n/m | n/m | 18/09/2025 14:00:00 |
| Bournemouth Timeseries Graph |
44 (2 Low) | 4 (1 Low) | n/m | 6 (1 Low) | n/m | 18/09/2025 14:00:00 |
| Bristol St Paul's Timeseries Graph |
n/a | 6 (1 Low) | n/m | 1 (1 Low) | 6 (1 Low) *1 | 18/09/2025 14:00:00 |
| Bristol Temple Way Timeseries Graph |
n/m | 11 (1 Low) | n/m | 2 (1 Low) | 4 (1 Low) *2 | 18/09/2025 14:00:00 |
| Charlton Mackrell Timeseries Graph |
38 (2 Low) | 4 (1 Low) | n/m | 2 (1 Low) | 5 (1 Low) *2 | 18/09/2025 14:00:00 |
| Cheltenham A40 Gloucester Road Timeseries Graph |
n/m | n/m | n/m | 0 (1 Low) | n/m | 18/09/2025 13:00:00 |
| Christchurch Barrack Road Timeseries Graph |
n/m | 2 (1 Low) | n/m | 6 (1 Low) | n/m | 18/09/2025 14:00:00 |
| Exeter Roadside Timeseries Graph |
43 (2 Low) | 6 (1 Low) | n/m | n/m | n/m | 18/09/2025 14:00:00 |
| Gloucester Tredworth Timeseries Graph |
n/m | n/m | n/m | 1 (1 Low) | 2 (1 Low) *2 | 18/09/2025 13:00:00 |
| Honiton Timeseries Graph |
40 (2 Low) | 2 (1 Low) | n/m | 1 (1 Low) | 2 (1 Low) *2 | 18/09/2025 14:00:00 |
| London Farringdon Street Timeseries Graph |
n/m | 26 (1 Low) | n/m | 5 (1 Low) | n/m | 18/09/2025 14:00:00 |
| Plymouth Centre Timeseries Graph |
37 (2 Low) | 17 (1 Low) | n/m | 7 (1 Low) | 11 (1 Low) *2 | 18/09/2025 14:00:00 |
| Plymouth Tavistock Road Timeseries Graph |
n/m | 11 (1 Low) | n/m | n/m | n/m | 18/09/2025 13:00:00 |
| Saltash Callington Road Timeseries Graph |
n/m | n/m | n/m | 2 (1 Low) | 8 (1 Low) *1 | 18/09/2025 14:00:00 |
| Swindon Walcot Timeseries Graph |
37 (2 Low) | n/a | n/m | 2 (1 Low) | 4 (1 Low) *2 | 18/09/2025 14:00:00 |
| Yarner Wood Timeseries Graph |
43 (2 Low) | 2 (1 Low) | n/m | 1 (1 Low) | 2 (1 Low) *2 | 18/09/2025 14:00:00 |
» 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