Royal Borough of Windsor & Maidenhead Monitoring Data
Use the map above to explore the monitoring sites in for this local authority and the surrounding area. The table below shows a summary of sites within this local authority - you can click on the site names to get more detailed information.
Active local authority funded monitoring sites
| Monitoring Site | Ozone (O3) |
Nitrogen Dioxide (NO2) |
Sulphur Dioxide (SO2) |
Particulate Matter (PM2.5) |
Particulate Matter (PM10) |
Highest Pollution Band | Last Updated |
|---|---|---|---|---|---|---|---|
| Bray A308 (sensor) | n/m | 66 (1 Low) | n/m | 24 (3 Low) | 39 (3 Low) | Low (Index 3) |
04/04/2025 15:00 |
| Maidenhead Bridge Road (sensor) | n/m | 84 (2 Low) | n/m | 25 (3 Low) | 38 (3 Low) | Low (Index 3) |
04/04/2025 15:00 |
| Windsor A332 (sensor) | n/m | 34 (1 Low) | n/m | 19 (2 Low) | 29 (2 Low) | Low (Index 2) |
04/04/2025 15:00 |
| Windsor St Leonards Road (sensor) | n/m | 60 (1 Low) | n/m | 25 (3 Low) | 36 (3 Low) | Low (Index 3) |
04/04/2025 15:00 |
| Wraysbury M25 (sensor) | n/m | 57 (1 Low) | n/m | 27 (3 Low) | 38 (3 Low) | Low (Index 3) |
04/04/2025 15:00 |
» Visit the Defra UK-AIR website for details of Defra funded AURN monitoring sites
Closed local authority funded monitoring sites
The following monitoring sites are no longer active in this local authority, but you can still access information about them by clicking on their names below.
| Monitoring Site | Date Ended |
|---|---|
| Frascati Way [Closed] (RBWM001) | 13/12/2024 |
LOW ( Index 3)
| Very High | 10 |
| High | 9 |
| 8 | |
| 7 | |
| Moderate | 6 |
| 5 | |
| 4 | |
| Low | 3 |
| 2 | |
| 1 |
Guide to map markers:
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