Heathrow Airwatch uses cookies to make the site simpler. Find out more about this

Latest air quality summary

Number of monitoring sites in each pollution band

Heathrow Airwatch was last updated at 08:00 on Tuesday 25th June 2019

  • Low26
  • Moderate0
  • High0
  • Very High0
  • No Data0
  • 26

    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

Click on a monitoring site from the map above or the text summary below to view the latest data and graphs for the selected site.

Site Summary

Monitoring site Band/Index Last updated
Heathrow Green Gates LOW (Index 2) NO2  25/06/2019 07:00
PM10  25/06/2019 07:00
PM2.5  25/06/2019 07:00
Heathrow LHR2 LOW (Index 2) NO2  25/06/2019 07:00
PM10  25/06/2019 07:00
PM2.5  25/06/2019 07:00
BC  25/06/2019 07:00
Heathrow Oaks Road LOW (Index 2) NO2  25/06/2019 07:00
PM10  25/06/2019 07:00
PM2.5  25/06/2019 07:00
BC  25/06/2019 06:00
Hillingdon 1 - South Ruislip LOW (Index 1) 25/06/2019 01:00
Hillingdon Hayes LOW (Index 3) 25/06/2019 06:00
Hillingdon Sipson LOW (Index 1) 24/06/2019 17:00
Hounslow 2 - Cranford LOW (Index 2) 25/06/2019 06:00
Hounslow 4 - Chiswick High Road LOW (Index 2) 25/06/2019 07:00
Hounslow Boston Manor Park LOW (Index 2) 25/06/2019 07:00
Hounslow Brentford LOW (Index 2) 25/06/2019 06:00
Hounslow Feltham LOW (Index 2) 25/06/2019 07:00
Hounslow Gunnersbury LOW (Index 2) 25/06/2019 07:00
Hounslow Hatton Cross LOW (Index 2) 25/06/2019 07:00
Hounslow Heston Road LOW (Index 2) 25/06/2019 07:00
London Harlington LOW (Index 2) O3  25/06/2019 07:00
NO2  25/06/2019 07:00
PM10  25/06/2019 07:00
PM2.5  25/06/2019 07:00
London Hillingdon LOW (Index 1) 25/06/2019 07:00
London Hillingdon Harmondsworth LOW (Index 2) 25/06/2019 06:00
London Hillingdon Harmondsworth Os LOW (Index 1) 25/06/2019 05:00
London Hillingdon Oxford Avenue LOW (Index 2) 25/06/2019 07:00
Slough Brands Hill London Road LOW (Index 3) 25/06/2019 07:00
Slough Chalvey M4 LOW (Index 1) 25/06/2019 07:00
Slough Colnbrook LOW (Index 2) 25/06/2019 07:00
Slough Town Centre A4 LOW (Index 2) 25/06/2019 07:00
Slough Town Centre Wellington Street LOW (Index 1) 25/06/2019 07:00
Slough Windmill Bath Road LOW (Index 2) 25/06/2019 07:00
Spelthorne Sunbury Cross LOW (Index 2) 25/06/2019 07:00