London Borough of Hillingdon Monitoring Data

Heathrow Green Gates (T55)

Latitude: 51.481478
Longitude: -0.486675
Date Started: 04/05/2001
Altitude: 22 metres
Environment: Airport

Latest Data

This monitoring site data was last updated: 13/08/2020 15:00

Parameter Pollution Band Concentration Period
PM10 particulate matter (Hourly measured)   No Data 24 Hour mean
PM2.5 particulate matter (Hourly measured)   No Data 24 Hour mean
Nitrogen dioxide (NO2) Low (Index 1) 10 µg/m3 hourly mean
Nitric oxide (NO) not applicable 1 µg/m3 hourly mean
Nitrogen oxides as nitrogen dioxide (NOx as NO2) not applicable 12 µg/m3 hourly mean
PM1 Particulates (PM1)   No Data 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 Green Gates monitoring site