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 12:00 on Thursday 4th March 2021
- Low22
- Moderate1
- High0
- Very High0
- No Data2
- 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 Bath Road | NO DATA | 23/03/2020 24:00 |
| Heathrow Green Gates | LOW (Index 3) | NO2 04/03/2021 12:00 PM10 04/03/2021 12:00 PM2.5 04/03/2021 12:00 |
| Heathrow LHR2 | LOW (Index 3) | NO2 04/03/2021 12:00 PM10 04/03/2021 12:00 PM2.5 04/03/2021 12:00 BC 04/03/2021 12:00 |
| Heathrow Oaks Road | LOW (Index 3) | NO2 04/03/2021 12:00 PM10 04/03/2021 12:00 PM2.5 04/03/2021 12:00 BC 04/03/2021 12:00 |
| Hillingdon 1 - South Ruislip | LOW (Index 3) | 04/03/2021 12:00 |
| Hillingdon Hayes | LOW (Index 3) | 04/03/2021 07:00 |
| Hillingdon Sipson | LOW (Index 1) | 04/03/2021 07:00 |
| Hounslow 2 - Cranford | NO DATA | 08/04/2020 19:00 |
| Hounslow 4 - Chiswick High Road | LOW (Index 3) | 04/03/2021 12:00 |
| Hounslow Brentford | MODERATE (Index 4) | 04/03/2021 12:00 |
| Hounslow Feltham | LOW (Index 2) | 04/03/2021 12:00 |
| Hounslow Gunnersbury | LOW (Index 2) | 04/03/2021 12:00 |
| Hounslow Hatton Cross | LOW (Index 3) | 04/03/2021 12:00 |
| Hounslow Heston Road | LOW (Index 2) | 04/03/2021 12:00 |
| London Harlington | LOW (Index 3) | O3 04/03/2021 12:00 NO2 04/03/2021 12:00 PM10 04/03/2021 12:00 PM2.5 04/03/2021 12:00 |
| London Hillingdon | LOW (Index 2) | 04/03/2021 12:00 |
| London Hillingdon Harmondsworth | LOW (Index 3) | 04/03/2021 07:00 |
| London Hillingdon Harmondsworth Os | LOW (Index 3) | 04/03/2021 06:00 |
| London Hillingdon Oxford Avenue | LOW (Index 3) | 04/03/2021 12:00 |
| Slough Brands Hill London Road | LOW (Index 3) | 04/03/2021 12:00 |
| Slough Chalvey M4 | LOW (Index 1) | 04/03/2021 12:00 |
| Slough Colnbrook | LOW (Index 3) | 04/03/2021 12:00 |
| Slough Town Centre Wellington Street | LOW (Index 1) | 04/03/2021 12:00 |
| Slough Windmill Bath Road | LOW (Index 3) | 04/03/2021 12:00 |
| Spelthorne Sunbury Cross | LOW (Index 3) | 04/03/2021 12:00 |
