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Latest air quality summary
Number of monitoring sites in each pollution band
Heathrow Airwatch was last updated at 07:00 on Sunday 21st July 2019
- Low25
- Moderate0
- High0
- Very High0
- No Data1
- 26
Total monitoring sites
Low (1-3)
Moderate (4-6)
High (7-9)
Very High (10)
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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 1) | PM10 21/07/2019 06:00 PM2.5 21/07/2019 06:00 NO2 21/07/2019 05:00 |
| Heathrow LHR2 | LOW (Index 1) | NO2 21/07/2019 06:00 PM10 21/07/2019 06:00 PM2.5 21/07/2019 06:00 BC 21/07/2019 06:00 |
| Heathrow Oaks Road | LOW (Index 1) | NO2 21/07/2019 06:00 PM10 21/07/2019 06:00 PM2.5 21/07/2019 06:00 BC 21/07/2019 06:00 |
| Hillingdon 1 - South Ruislip | LOW (Index 1) | 21/07/2019 06:00 |
| Hillingdon Hayes | LOW (Index 2) | 21/07/2019 06:00 |
| Hillingdon Sipson | LOW (Index 1) | 21/07/2019 06:00 |
| Hounslow 2 - Cranford | LOW (Index 1) | 21/07/2019 06:00 |
| Hounslow 4 - Chiswick High Road | LOW (Index 1) | 21/07/2019 04:00 |
| Hounslow Boston Manor Park | LOW (Index 1) | 21/07/2019 06:00 |
| Hounslow Brentford | NO DATA | 19/07/2019 10:00 |
| Hounslow Feltham | LOW (Index 1) | 21/07/2019 06:00 |
| Hounslow Gunnersbury | LOW (Index 1) | 21/07/2019 06:00 |
| Hounslow Hatton Cross | LOW (Index 1) | 21/07/2019 06:00 |
| Hounslow Heston Road | LOW (Index 1) | 21/07/2019 06:00 |
| London Harlington | LOW (Index 1) | O3 21/07/2019 06:00 NO2 21/07/2019 06:00 PM10 21/07/2019 06:00 PM2.5 21/07/2019 06:00 |
| London Hillingdon | LOW (Index 1) | 21/07/2019 06:00 |
| London Hillingdon Harmondsworth | LOW (Index 1) | 21/07/2019 06:00 |
| London Hillingdon Harmondsworth Os | LOW (Index 2) | 21/07/2019 05:00 |
| London Hillingdon Oxford Avenue | LOW (Index 1) | 21/07/2019 03:00 |
| Slough Brands Hill London Road | LOW (Index 1) | 21/07/2019 06:00 |
| Slough Chalvey M4 | LOW (Index 1) | 21/07/2019 06:00 |
| Slough Colnbrook | LOW (Index 1) | 21/07/2019 06:00 |
| Slough Town Centre A4 | LOW (Index 1) | 21/07/2019 06:00 |
| Slough Town Centre Wellington Street | LOW (Index 1) | 21/07/2019 06:00 |
| Slough Windmill Bath Road | NO DATA | 16/07/2019 24:00 |
| Spelthorne Sunbury Cross | LOW (Index 1) | 21/07/2019 06:00 |
