Latest air quality summary

Number of monitoring sites in each pollution band

Heathrow Airwatch was last updated at 23:00 on Sunday 19th May 2024

  • Low20
  • Moderate1
  • High0
  • Very High0
  • No Data1
  • 22

    Total monitoring sites

Green Low (1-3) Orange Moderate (4-6) Red High (7-9) Purple Very High (10)
Grey Offline | Find out more about the air pollution index and bandings

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Hounslow Heston Road

Site Information
Environment Type Roadside
Coordinates (Lat/Long) 51.479136, -0.364743
Altitude 31m
Kerb Distance 4
Site Comments A4 jcn with A3005

Monitoring Networks

Heathrow airwatch

Parameter Date Started Date Ended
Modelled Temperature 01/08/2010 -
Modelled Wind Direction 01/08/2010 -
Modelled Wind Speed 01/08/2010 -
Nitric Oxide 13/04/2006 -
Nitrogen dioxide 13/04/2006 -
Oxides of Nitrogen 13/04/2006 -
PM10 Particulate matter 13/04/2006 -
PM10 Particulate matter 13/04/2006 -