London Borough of Hounslow Monitoring Data

Hounslow Heston (HS6)

Latitude: 51.479129
Longitude: -0.364760
Date Started: 13/04/2006
Inlet Height: 3 metres
Environment: Urban Traffic

Latest Data

This monitoring site data was last updated: 15/10/2024 10:00

Parameter Pollution Band Concentration Period
PM10 particulate matter (Hourly measured) Low (Index 2) 20 µg/m3 (TEOM FDMS) 24 Hour mean
PM2.5 particulate matter (Hourly measured) Low (Index 2) 12 µg/m3 (TEOM FDMS) 24 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 30 µg/m3 hourly mean
Nitric oxide (NO) not applicable 36 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 86 µg/m3 hourly mean
Non-volatile PM10 (Hourly measured) not applicable 15 µg/m3 (TEOM FDMS) 24 Hour mean
Volatile PM10 (Hourly measured) not applicable 5 µg/m3 (TEOM FDMS) 24 Hour mean
Non-volatile PM2.5 (Hourly measured) not applicable 9 µg/m3 (TEOM FDMS) 24 Hour mean
Volatile PM2.5 (Hourly measured) (Volatile PM2.5) not applicable 3 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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Map showing the location of the Hounslow Heston monitoring site