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Latest air quality summary
Number of monitoring sites in each pollution band
Heathrow Airwatch was last updated at 03:00 on Saturday 27th July 2024
- Low11
- Moderate0
- High0
- Very High0
- No Data11
- 22
Total monitoring sites
![Green](http://www.heathrowairwatch.org.uk/images/map_legend_1-3.jpg)
![Orange](http://www.heathrowairwatch.org.uk/images/map_legend_4-6.jpg)
![Red](http://www.heathrowairwatch.org.uk/images/map_legend_7-9.jpg)
![Purple](http://www.heathrowairwatch.org.uk/images/map_legend_10.jpg)
![Grey](http://www.heathrowairwatch.org.uk/images/map_legend_0.jpg)
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 Bath Road | NO DATA | 26/07/2024 21:00 |
Heathrow Green Gates | NO DATA | NO2 26/07/2024 21:00 PM10 26/07/2024 21:00 PM2.5 26/07/2024 21:00 |
Heathrow LHR2 | NO DATA | NO2 26/07/2024 21:00 PM10 26/07/2024 21:00 PM2.5 26/07/2024 21:00 BC 26/07/2024 21:00 |
Heathrow Oaks Road | NO DATA | NO2 26/07/2024 21:00 PM10 26/07/2024 21:00 PM2.5 26/07/2024 21:00 BC 26/07/2024 21:00 |
Hillingdon 1 - South Ruislip | LOW (Index 1) | 26/07/2024 21:00 |
Hillingdon Hayes | LOW (Index 2) | 26/07/2024 21:00 |
Hillingdon Sipson | LOW (Index 1) | 26/07/2024 21:00 |
Hounslow 4 - Chiswick High Road | LOW (Index 2) | 26/07/2024 21:00 |
Hounslow Brentford | NO DATA | 26/07/2024 14:00 |
Hounslow Feltham | LOW (Index 1) | 26/07/2024 21:00 |
Hounslow Gunnersbury | LOW (Index 2) | 26/07/2024 21:00 |
Hounslow Hatton Cross | LOW (Index 1) | 26/07/2024 16:00 |
Hounslow Heston Road | LOW (Index 1) | 26/07/2024 21:00 |
London Harlington | NO DATA | NO2 26/07/2024 21:00 PM10 26/07/2024 21:00 PM2.5 26/07/2024 21:00 O3 17/07/2024 06:00 |
London Hillingdon | LOW (Index 1) | 27/07/2024 02:00 |
London Hillingdon Harmondsworth | LOW (Index 1) | 26/07/2024 21:00 |
London Hillingdon Harmondsworth Os | NO DATA | 26/07/2024 05:00 |
London Hillingdon Oxford Avenue | NO DATA | 26/07/2024 21:00 |
Slough Brands Hill London Road | NO DATA | 26/07/2024 21:00 |
Slough Town Centre Wellington Street | NO DATA | 24/07/2024 10:00 |
Slough Windmill Bath Road | NO DATA | 26/07/2024 21:00 |
Spelthorne Sunbury Cross | NO DATA | 25/06/2024 15:00 |