London Borough of Hounslow Monitoring Data
Hounslow Feltham (HS9)
Latitude: 51.447388
Longitude: -0.408733
Date Started: 19/08/2009
Longitude: -0.408733
Date Started: 19/08/2009
Altitude: 2 metres
Environment: Urban Background
Environment: Urban Background
Site Comments
Hanworth Road, Feltham
Hanworth Road, Feltham
Latest Data
This monitoring site data was last updated: 14/06/2025 21:00
| Parameter | Pollution Band | Concentration | Period |
|---|---|---|---|
| Nitrogen dioxide (NO2) | Low (Index 1) | 19 µg/m3 | hourly mean |
| PM10 particulate matter (Hourly measured) | No Data | 24 Hour mean | |
| PM2.5 particulate matter (Hourly measured) | No Data | 24 Hour mean | |
| Nitric oxide (NO) | not applicable | 7 µg/m3 | hourly mean |
| Nitrogen oxides as nitrogen dioxide (NOx as NO2) | not applicable | 29 µg/m3 | hourly mean |
| Non-volatile PM10 (Hourly measured) | No Data | 24 Hour mean | |
| Volatile PM10 (Hourly measured) | No Data | 24 Hour mean | |
| Non-volatile PM2.5 (Hourly measured) | No Data | 24 Hour mean | |
| Volatile PM2.5 (Hourly measured) (Volatile PM2.5) | No Data | 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.
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