London Borough of Hounslow Monitoring Data
Hounslow Brentford (HS5)
Latitude: 51.489398
Longitude: -0.310081
Date Started: 02/06/2003
Longitude: -0.310081
Date Started: 02/06/2003
Inlet Height: 3 metres
Environment: Urban Traffic
Environment: Urban Traffic
Latest Data
This monitoring site data was last updated: 31/03/2025 09:00
| Parameter | Pollution Band | Concentration | Period |
|---|---|---|---|
| PM10 particulate matter (Hourly measured) | Low (Index 2) | 23 µg/m3 (TEOM FDMS) | 24 Hour mean |
| Nitrogen dioxide (NO2) | Low (Index 1) | 46 µg/m3 | hourly mean |
| PM2.5 particulate matter (Hourly measured) | Low (Index 1) | 8 µg/m3 (TEOM FDMS) | 24 Hour mean |
| Nitric oxide (NO) | not applicable | 32 µg/m3 | hourly mean |
| Nitrogen oxides as nitrogen dioxide (NOx as NO2) | not applicable | 94 µg/m3 | hourly mean |
| Non-volatile PM10 (Hourly measured) | not applicable | 21 µg/m3 (TEOM FDMS) | 24 Hour mean |
| Volatile PM10 (Hourly measured) | not applicable | 2 µg/m3 (TEOM FDMS) | 24 Hour mean |
| Non-volatile PM2.5 (Hourly measured) | not applicable | 7 µg/m3 (TEOM FDMS) | 24 Hour mean |
| Volatile PM2.5 (Hourly measured) (Volatile PM2.5) | not applicable | 1 µg/m3 (TEOM FDMS) | 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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