London Borough of Hillingdon

London Hillingdon (HIL, an AURN site)

Latitude: 51.496330
Longitude: -0.460861
Date Started: 02/08/1996
Altitude: 34 metres
Environment: Urban Background

Latest Data

This monitoring site data was last updated: 22/07/2019 11:00

Parameter Pollution Band Concentration Period
Ozone (O3) Low (Index 1) 11 µg/m3 8 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 36 µg/m3 hourly mean
Nitric oxide (NO) not applicable 39 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 96 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 London Hillingdon monitoring site