London Borough of Hillingdon Monitoring Data

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Hillingdon Oxford Avenue (HI3)

Latitude: 51.481130
Longitude: -0.423760
Date Started: 07/03/2005
Environment: Urban Background

Latest Data

This monitoring site data was last updated: Sorry, no current data available. The last data date time is: 03/11/2025 21:00

Parameter Pollution Band Concentration Period
PM10 particulate matter (Hourly measured) Low (Index 2) 20 µg/m3 (Ref.eq) 24 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 9 µg/m3 hourly mean
Nitric oxide (NO) not applicable 2 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 12 µg/m3 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 Hillingdon Oxford Avenue monitoring site