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Latest air quality summary
Number of monitoring sites in each pollution band
Heathrow Airwatch was last updated at 05:00 on Wednesday 29th November 2023
- Low14
- Moderate0
- High0
- Very High0
- No Data8
- 22
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 | 29/11/2023 02:00 |
| Heathrow Green Gates | LOW (Index 1) | PM10 29/11/2023 02:00 PM2.5 29/11/2023 02:00 NO2 29/11/2023 01:00 |
| Heathrow LHR2 | LOW (Index 1) | PM10 29/11/2023 03:00 PM2.5 29/11/2023 03:00 NO2 29/11/2023 02:00 BC 29/11/2023 02:00 |
| Heathrow Oaks Road | LOW (Index 1) | PM10 29/11/2023 02:00 PM2.5 29/11/2023 02:00 BC 29/11/2023 02:00 NO2 29/11/2023 01:00 |
| Hillingdon 1 - South Ruislip | NO DATA | 28/11/2023 23:00 |
| Hillingdon Hayes | LOW (Index 1) | 29/11/2023 01:00 |
| Hillingdon Sipson | LOW (Index 1) | 29/11/2023 01:00 |
| Hounslow 4 - Chiswick High Road | LOW (Index 1) | 29/11/2023 03:00 |
| Hounslow Brentford | LOW (Index 2) | 29/11/2023 02:00 |
| Hounslow Feltham | LOW (Index 1) | 29/11/2023 04:00 |
| Hounslow Gunnersbury | LOW (Index 2) | 29/11/2023 02:00 |
| Hounslow Hatton Cross | LOW (Index 1) | 28/11/2023 17:00 |
| Hounslow Heston Road | LOW (Index 1) | 29/11/2023 02:00 |
| London Harlington | LOW (Index 1) | PM10 29/11/2023 02:00 PM2.5 29/11/2023 02:00 O3 29/11/2023 01:00 NO2 29/11/2023 01:00 |
| London Hillingdon | LOW (Index 1) | 29/11/2023 05:00 |
| London Hillingdon Harmondsworth | LOW (Index 1) | 28/11/2023 22:00 |
| London Hillingdon Harmondsworth Os | NO DATA | 28/11/2023 06:00 |
| London Hillingdon Oxford Avenue | NO DATA | 12/11/2023 24:00 |
| Slough Brands Hill London Road | NO DATA | 29/11/2023 01:00 |
| Slough Town Centre Wellington Street | NO DATA | 29/11/2023 01:00 |
| Slough Windmill Bath Road | NO DATA | 29/11/2023 01:00 |
| Spelthorne Sunbury Cross | NO DATA | 29/11/2023 02:00 |
