Current measured levels

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Details for London Hillingdon Harmondsworth

Today's Air Pollution levels are: Low (Index 1)
Pollution levels are Index 1
at 13:00 on 19/04/2025
Note: These results are based on provisional data. The data are presented in graphical form based on the highest pollutant measured at each site.

Current Levels for London Hillingdon Harmondsworth are:

ParameterConcentrationUnitBandLast updated
GE10 15µg/m3 (Ref.eq) Low (1)  19/04/2025 13:00
NO 3µg/m3   19/04/2025 13:00
NO2 7µg/m3 Low (1)  19/04/2025 13:00
NOXasNO2 12µg/m3   19/04/2025 13:00