Greater London Monitoring Data
Use the tabs below to explore information about the current and historic air pollution levels in this local authority.
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Use the map above to explore the monitoring sites in for this local authority and the surrounding area. The table below shows a summary of sites within this local authority - you can click on the site names to get more detailed information.
Active local authority funded monitoring sites
| Monitoring Site | Ozone (O3) |
Nitrogen Dioxide (NO2) |
Sulphur Dioxide (SO2) |
Particulate Matter (PM2.5) |
Particulate Matter (PM10) |
Highest Pollution Band | Last Updated |
|---|---|---|---|---|---|---|---|
| Barnet Chalgrove School | n/m | 21 (1 Low) | n/m | n/m | 20 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Barnet Tally Ho | n/m | 34 (1 Low) | n/m | 9 (1 Low) | 17 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Beech Street NOx | n/m | 40 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
16/12/2025 11:00 |
| Beech Street PM | n/m | n/m | n/m | n/m | 16 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Bell Wharf Lane | n/m | 36 (1 Low) | n/m | n/m | 19 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Brent Ikea | 21 (1 Low) | n/m | n/m | 13 (2 Low) | n/m | Low (Index 2) |
16/12/2025 11:00 |
| Camden - Coopers Lane | n/m | n/m | n/m | 6 (1 Low) | 12 (1 Low) | Low (Index 1) |
16/12/2025 08:00 |
| Camden - Euston Road | n/m | 44 (1 Low) | n/m | 11 (1 Low) | 21 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Camden High Street | n/m | 24 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
16/12/2025 11:00 |
| Ealing Acton Background (sensor) | n/m | 46 (1 Low) | n/m | 11 (1 Low) | 16 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Ealing Elthorne Park High School (sensor) | n/m | 55 (1 Low) | n/m | 17 (2 Low) | 42 (3 Low) | Low (Index 3) |
16/12/2025 11:00 |
| Ealing Greenford Background (sensor) | n/m | 42 (1 Low) | n/m | 12 (2 Low) | 18 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Ealing Havelock Primary School (sensor) | n/m | 48 (1 Low) | n/m | 11 (1 Low) | 17 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Ealing John Perryn Primary School (sensor) | n/m | 54 (1 Low) | n/m | 8 (1 Low) | 11 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Ealing Khalsa Primary School (sensor) | n/m | 47 (1 Low) | n/m | 10 (1 Low) | 15 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Ealing Lady Margaret Primary School (sensor) | n/m | 54 (1 Low) | n/m | 8 (1 Low) | 16 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Ealing Northolt High School (sensor) | n/m | n/a | n/m | n/a | n/a | No Data | 17/11/2025 07:00 |
| Ealing Twyford CofE High School (sensor) | n/m | 61 (1 Low) | n/m | 12 (2 Low) | 21 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Ealing William Perkin CofE School (sensor) | n/m | 57 (1 Low) | n/m | 8 (1 Low) | 11 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Fulham Town Centre | 28 (1 Low) | 37 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Greenwich Westhorne Avenue | 30 (1 Low) | n/m | n/m | n/m | n/m | Low (Index 1) |
16/12/2025 11:00 |
| Greenwich Woolwich Flyover | 18 (1 Low) | n/m | n/m | 14 (2 Low) | n/m | Low (Index 2) |
16/12/2025 08:00 |
| Guildhall | 29 (1 Low) | n/m | n/m | n/m | n/m | Low (Index 1) |
16/12/2025 11:00 |
| Hackney Amhurst Road | n/m | 11 (1 Low) | n/m | n/m | 24 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hackney Dalston Lane | n/m | 48 (1 Low) | n/m | n/m | 21 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hackney Graham Road | n/m | 44 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hackney Green Lanes | n/m | 21 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
16/12/2025 11:00 |
| Hackney Homerton Library | n/m | 23 (1 Low) | n/m | n/m | 19 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hackney Northwold Road | n/m | 25 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hackney Old Street | 32 (1 Low) | 29 (1 Low) | n/m | 14 (2 Low) | 30 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hammersmith Town Centre | 23 (1 Low) | 47 (1 Low) | n/m | 9 (1 Low) | 20 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Haringey Wood Green | n/m | 62 (1 Low) | n/m | 10 (1 Low) | 14 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Heathrow Bath Road | n/m | 58 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Heathrow Green Gates | n/m | 42 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Heathrow LHR2 | n/m | 53 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Hillingdon Harmondsworth | n/m | 28 (1 Low) | n/m | n/m | 14 (1 Low) | Low (Index 1) |
16/12/2025 07:00 |
| Hillingdon Harmondsworth Osiris | n/m | n/m | n/m | 8 (1 Low) | 12 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Hillingdon Hayes | n/m | 53 (1 Low) | n/m | n/m | 24 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hillingdon Oxford Avenue | n/m | 37 (1 Low) | n/m | n/m | 20 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hillingdon Sipson | n/m | 53 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
16/12/2025 11:00 |
| Hillingdon South Ruislip | n/m | 31 (1 Low) | n/m | n/m | 26 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hounslow Brentford | n/m | 27 (1 Low) | n/m | 9 (1 Low) | 18 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Hounslow Chiswick | n/m | 37 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Hounslow Feltham | n/m | 32 (1 Low) | n/m | n/a | n/a | Low (Index 1) |
16/12/2025 11:00 |
| Hounslow Gunnersbury | n/m | 41 (1 Low) | n/m | n/a | n/a | Low (Index 1) |
16/12/2025 11:00 |
| Hounslow Hatton Cross | n/m | 22 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Hounslow Heston | n/m | 31 (1 Low) | n/m | n/a | n/a | Low (Index 1) |
16/12/2025 11:00 |
| Kingston Upon Thames Cromwell Road | n/m | 31 (1 Low) | n/m | n/m | 24 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Kingston Upon Thames Kingston Vale | n/m | n/a | n/m | n/m | n/a | No Data | 09/12/2025 10:00 |
| Kingston Upon Thames Tolworth Broadway | n/m | 28 (1 Low) | n/m | 16 (2 Low) | n/m | Low (Index 2) |
16/12/2025 11:00 |
| Newham Cam Road | n/m | 23 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Newham East Ham Town Hall | n/m | 36 (1 Low) | n/m | 15 (2 Low) | n/m | Low (Index 2) |
16/12/2025 11:00 |
| Newham Wren Close | n/m | 13 (1 Low) | n/m | 11 (1 Low) | 18 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| RBKC Chelsea Old Town Hall | n/m | 59 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
16/12/2025 11:00 |
| RBKC Cromwell Road | 22 (1 Low) | 43 (1 Low) | n/m | 7 (1 Low) | n/a | Low (Index 1) |
16/12/2025 11:00 |
| RBKC Earl's Court Road | n/m | 54 (1 Low) | n/m | n/m | 18 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| RBKC Knightsbridge | n/m | 27 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
16/12/2025 11:00 |
| Redbridge Gardner Close | n/m | 32 (1 Low) | n/m | n/m | 20 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Redbridge Ley Street | 23 (1 Low) | 19 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Riverwalk | 32 (1 Low) | 19 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Sands End | 34 (2 Low) | 22 (1 Low) | n/m | 8 (1 Low) | 14 (1 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Shepherds Bush Town Centre | n/m | 35 (1 Low) | n/m | 9 (1 Low) | 19 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Southwark A2 Old Kent Road (FIDAS) | n/m | n/m | n/m | 9 (1 Low) | 15 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Southwark Elephant and Castle | 39 (2 Low) | 18 (1 Low) | n/m | 10 (1 Low) | 15 (1 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Southwark Lower Road | n/m | 26 (1 Low) | n/m | 10 (1 Low) | 18 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Southwark South Circular Road | n/m | 26 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Southwark Tower Bridge Road | n/m | 39 (1 Low) | n/m | 11 (1 Low) | 18 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Southwark Vicarage Grove | n/m | 31 (1 Low) | n/m | 11 (1 Low) | 17 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Sutton Beddington Lane north | n/m | 25 (1 Low) | n/m | 12 (2 Low) | 21 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Sutton Beddington Village | n/m | 13 (1 Low) | n/m | n/m | 23 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Sutton Wallington | n/m | n/a | n/m | n/m | n/a | No Data | 21/06/2024 17:00 |
| Sutton Worcester Park | n/m | 29 (1 Low) | n/m | n/m | 25 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| The Aldgate School | n/m | 26 (1 Low) | n/m | 22 (2 Low) | 21 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Tower Hamlets - Blackwall | 22 (1 Low) | 34 (1 Low) | n/m | 9 (1 Low) | 17 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Waltham Forest Crooked Billet | n/m | 33 (1 Low) | n/m | n/m | 32 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Waltham Forest Dawlish Rd | n/m | 26 (1 Low) | n/m | 11 (1 Low) | 22 (2 Low) | Low (Index 2) |
16/12/2025 10:00 |
| Waltham Forest Leyton | n/m | n/a | n/m | n/m | 17 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Wormwood Scrubs | 30 (1 Low) | 24 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| Camden Kerbside (Swiss Cottage) | n/m | 36 (1 Low) | n/m | 12 (2 Low) | 24 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Ealing Horn Lane | n/m | n/m | n/m | n/m | 23 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| Haringey Roadside | n/m | 41 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
16/12/2025 11:00 |
| London Bexley | n/m | 21 (1 Low) | n/m | 10 (1 Low) | 15 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| London Bloomsbury | 27 (1 Low) | 29 (1 Low) | 1 (1 Low) | 10 (1 Low) | 17 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| London Farringdon Street | n/m | 41 (1 Low) | n/m | 12 (2 Low) | n/m | Low (Index 2) |
16/12/2025 11:00 |
| London Haringey Priory Park South | 32 (1 Low) | 22 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| London Harlington | 22 (1 Low) | 44 (1 Low) | n/m | 9 (1 Low) | 13 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| London Hillingdon | 13 (1 Low) | 55 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| London Honor Oak Park | 41 (2 Low) | n/m | n/m | 9 (1 Low) | 14 (1 Low) | Low (Index 2) |
16/12/2025 11:00 |
| London Marylebone Road | 20 (1 Low) | 57 (1 Low) | 3 (1 Low) | 14 (2 Low) | 21 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
| London N. Kensington (RBKC North Kensington) | 40 (2 Low) | 20 (1 Low) | 1 (1 Low) | 9 (1 Low) | 15 (1 Low) | Low (Index 2) |
16/12/2025 11:00 |
| London Norbury Manor School | n/m | n/m | n/m | 9 (1 Low) | 15 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| London Teddington Bushy Park | n/m | n/m | n/m | 8 (1 Low) | 15 (1 Low) | Low (Index 1) |
16/12/2025 11:00 |
| London Westminster | 29 (1 Low) | 25 (1 Low) | n/m | n/a | n/m | Low (Index 1) |
16/12/2025 11:00 |
| Southwark A2 Old Kent Road | n/m | 16 (1 Low) | n/m | n/m | 19 (2 Low) | Low (Index 2) |
16/12/2025 11:00 |
» Visit the Defra UK-AIR website for details of Defra funded AURN monitoring sites
Closed local authority funded monitoring sites
The following monitoring sites are no longer active in this local authority, but you can still access information about them by clicking on their names below.
Overall Pollution Summary:
LOW ( Index 3)
LOW ( Index 3)
| Very High | 10 |
| High | 9 |
| 8 | |
| 7 | |
| Moderate | 6 |
| 5 | |
| 4 | |
| Low | 3 |
| 2 | |
| 1 |
Guide to map markers:
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