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Latest air quality summary
Number of monitoring sites in each pollution band
Heathrow Airwatch was last updated at 02:00 on Monday 23rd April 2018
- Low9
- Moderate0
- High0
- Very High0
- No Data16
- 25
Total monitoring sites
Low (1-3)
Moderate (4-6)
High (7-9)
Very High (10)
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 | NO DATA | PM10 22/04/2018 21:00 PM2.5 22/04/2018 21:00 NO2 22/04/2018 20:00 |
| Heathrow LHR2 | NO DATA | PM10 22/04/2018 21:00 PM2.5 22/04/2018 21:00 NO2 22/04/2018 20:00 BC 22/04/2018 20:00 |
| Heathrow Oaks Road | NO DATA | PM10 22/04/2018 21:00 PM2.5 22/04/2018 21:00 BC 22/04/2018 21:00 NO2 22/04/2018 17:00 |
| Hillingdon 1 - South Ruislip | LOW (Index 2) | 22/04/2018 19:00 |
| Hillingdon Hayes | NO DATA | 22/04/2018 07:00 |
| Hillingdon Sipson | NO DATA | 20/04/2018 11:00 |
| Hounslow 2 - Cranford | NO DATA | 06/04/2018 05:00 |
| Hounslow 4 - Chiswick High Road | NO DATA | 22/04/2018 21:00 |
| Hounslow Brentford | NO DATA | 22/04/2018 21:00 |
| Hounslow Feltham | NO DATA | 22/04/2018 21:00 |
| Hounslow Gunnersbury | NO DATA | 22/04/2018 21:00 |
| Hounslow Hatton Cross | NO DATA | 22/04/2018 20:00 |
| Hounslow Heston Road | NO DATA | 22/04/2018 21:00 |
| London Harlington | NO DATA | PM10 22/04/2018 21:00 PM2.5 22/04/2018 21:00 O3 22/04/2018 20:00 NO2 22/04/2018 20:00 |
| London Hillingdon | LOW (Index 2) | 23/04/2018 01:00 |
| London Hillingdon Harmondsworth | LOW (Index 1) | 22/04/2018 21:00 |
| London Hillingdon Harmondsworth Os | LOW (Index 2) | 22/04/2018 06:00 |
| London Hillingdon Oxford Avenue | LOW (Index 2) | 22/04/2018 20:00 |
| Slough Brands Hill London Road | NO DATA | 22/04/2018 20:00 |
| Slough Chalvey M4 | LOW (Index 1) | 22/04/2018 21:00 |
| Slough Colnbrook | LOW (Index 3) | 22/04/2018 21:00 |
| Slough Town Centre A4 | LOW (Index 2) | 22/04/2018 21:00 |
| Slough Town Centre Wellington Street | NO DATA | 22/04/2018 20:00 |
| Slough Windmill Bath Road | NO DATA | 22/04/2018 20:00 |
| Spelthorne Sunbury Cross | NO DATA | 22/04/2018 20:00 |
