Spelthorne Borough Council Monitoring Data
Heathrow Oaks Road (T54)
Latitude: 51.459444
Longitude: -0.479444
Date Started: 04/05/2001
Longitude: -0.479444
Date Started: 04/05/2001
Altitude: 21 metres
Environment: Suburban Industrial
Environment: Suburban Industrial
Latest Data
This monitoring site data was last updated: 04/04/2025 15:00
| Parameter | Pollution Band | Concentration | Period |
|---|---|---|---|
| PM10 particulate matter (Hourly measured) | Low (Index 3) | 37 µg/m3 (FIDAS) | 24 Hour mean |
| PM2.5 particulate matter (Hourly measured) | Low (Index 3) | 25 µg/m3 (Ref.eq) | 24 Hour mean |
| Nitrogen dioxide (NO2) | Low (Index 1) | 26 µg/m3 | hourly mean |
| Nitric oxide (NO) | not applicable | 5 µg/m3 | hourly mean |
| Nitrogen oxides as nitrogen dioxide (NOx as NO2) | not applicable | 34 µg/m3 | hourly mean |
| PM1 Particulates (PM1) | not applicable | 24 µg/m3 (FIDAS) | 24 Hour mean |
Note: Values are based on provisional data. Data are GMT hour ending.
PM10 is measured as a running 24 hour mean, up to the current hour, and the band/index is calculated accordingly.