London Borough of Hounslow Monitoring Data

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Hounslow Chiswick (HS4)

Latitude: 51.492507
Longitude: -0.257252
Date Started: 26/08/1999
Inlet Height: 4 metres
Environment: Urban Background

Latest Data

This monitoring site data was last updated: 24/04/2024 20:00

Parameter Pollution Band Concentration Period
PM10 particulate matter (Hourly measured) Low (Index 2) 21 µg/m3 (INDIC GRAV) 24 Hour mean
Nitrogen dioxide (NO2)   No Data hourly mean
PM2.5 particulate matter (Hourly measured)   No Data 24 Hour mean
Nitric oxide (NO)   No Data hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2)   No Data hourly 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 Chiswick monitoring site