London Borough of Hillingdon Monitoring Data

Heathrow LHR2 (LHR2)

Latitude: 51.479167
Longitude: -0.440556
Date Started: 01/01/1993
Altitude: 26 metres
Environment: Suburban Industrial

Latest Data

This monitoring site data was last updated: 01/03/2021 05:00

Parameter Pollution Band Concentration Period
PM10 particulate matter (Hourly measured) Low (Index 2) 17 µg/m3 (FIDAS) 24 Hour mean
PM2.5 particulate matter (Hourly measured) Low (Index 2) 14 µg/m3 (Ref.eq) 24 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 24 µg/m3 hourly mean
Nitric oxide (NO) not applicable 14 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 46 µg/m3 hourly mean
PM1 Particulates (PM1) not applicable 13 µg/m3 (FIDAS) 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 Heathrow LHR2 monitoring site