London Borough of Hillingdon

London Harlington (HRL, an AURN site)

Latitude: 51.488790
Longitude: -0.441614
Date Started: 01/01/2004
Altitude: 35 metres
Environment: Airport

Latest Data

This monitoring site data was last updated: 18/12/2018 13:00

Parameter Pollution Band Concentration Period
Ozone (O3) Low (Index 2) 47 µg/m3 8 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 50 µg/m3 hourly mean
PM10 particulate matter (Hourly measured) Low (Index 1) 12 µg/m3 (FIDAS) 24 Hour mean
PM2.5 particulate matter (Hourly measured) Low (Index 1) 7 µg/m3 (Ref.eq) 24 Hour mean
Nitric oxide (NO) not applicable 29 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 94 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 Harlington monitoring site