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 | 7 (1 Low) | n/m | n/m | 30 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| Barnet Tally Ho | n/m | 20 (1 Low) | n/m | n/a | n/a | Low (Index 1) |
24/06/2026 13:00 |
| Beech Street NOx | n/m | 90 (2 Low) | n/m | n/m | n/m | Low (Index 2) |
24/06/2026 13:00 |
| Beech Street PM | n/m | n/m | n/m | 20 (2 Low) | 37 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Bell Wharf Lane | n/m | 24 (1 Low) | n/m | n/m | 29 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Brent Ikea | 24 (1 Low) | n/m | n/m | 19 (2 Low) | n/m | Low (Index 2) |
24/06/2026 12:00 |
| Bromley Harwood Avenue | n/m | n/a | n/m | n/a | n/a | No Data | 18/06/2026 11:00 |
| Camden - Coopers Lane | n/m | n/m | n/m | 42 (5 Moderate) | 55 (4 Moderate) | Moderate (Index 5) |
24/06/2026 13:00 |
| Camden - Euston Road | n/m | 53 (1 Low) | n/m | 22 (2 Low) | 36 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Camden High Street | n/m | 9 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
24/06/2026 13:00 |
| Camden Kilburn | 79 (3 Low) | 15 (1 Low) | n/m | 20 (2 Low) | 34 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Ealing Acton Background (sensor) | n/m | 19 (1 Low) | n/m | 18 (2 Low) | 31 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Ealing Elthorne Park High School (sensor) | n/m | 20 (1 Low) | n/m | 19 (2 Low) | 41 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Ealing Greenford Background (sensor) | n/m | 26 (1 Low) | n/m | 15 (2 Low) | 28 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Ealing Hanger Lane Gyratory | n/m | 21 (1 Low) | n/m | n/m | 38 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Ealing Havelock Primary School (sensor) | n/m | n/a | n/m | n/a | n/a | No Data | 21/04/2026 17:00 |
| Ealing Horn Lane (LAQN) | n/m | 27 (1 Low) | n/m | n/m | 50 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Ealing John Perryn Primary School (sensor) | n/m | 18 (1 Low) | n/m | 12 (2 Low) | 22 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Ealing Khalsa Primary School (sensor) | n/m | 30 (1 Low) | n/m | 12 (2 Low) | 27 (2 Low) | Low (Index 2) |
24/06/2026 11:00 |
| Ealing Lady Margaret Primary School (sensor) | n/m | 23 (1 Low) | n/m | 7 (1 Low) | 18 (2 Low) | Low (Index 2) |
23/06/2026 14:00 |
| Ealing Northolt High School (sensor) | n/m | 15 (1 Low) | n/m | n/a | 17 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Ealing Twyford CofE High School (sensor) | n/m | 7 (1 Low) | n/m | 13 (2 Low) | 24 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Ealing Western Avenue | n/m | n/a | n/m | n/m | n/a | No Data | 09/06/2026 22:00 |
| Ealing William Perkin CofE School (sensor) | n/m | 22 (1 Low) | n/m | 9 (1 Low) | 18 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Fulham Town Centre | 60 (2 Low) | 65 (1 Low) | n/m | 8 (1 Low) | 17 (2 Low) | Low (Index 2) |
23/06/2026 14:00 |
| Greenwich Westhorne Avenue | 75 (3 Low) | n/m | n/m | n/m | n/m | Low (Index 3) |
24/06/2026 13:00 |
| Greenwich Woolwich Flyover | 83 (3 Low) | n/m | n/m | 24 (3 Low) | n/m | Low (Index 3) |
24/06/2026 13:00 |
| Guildhall | 87 (3 Low) | n/m | n/m | n/m | n/m | Low (Index 3) |
24/06/2026 12:00 |
| Hackney Amhurst Road | n/m | 11 (1 Low) | n/m | n/m | 35 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Hackney Dalston Lane | n/m | 14 (1 Low) | n/m | n/m | 40 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Hackney Graham Road | n/m | 22 (1 Low) | n/m | 18 (2 Low) | 30 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Hackney Green Lanes | n/m | 8 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
24/06/2026 13:00 |
| Hackney Homerton Library | n/m | 40 (1 Low) | n/m | n/m | 43 (3 Low) | Low (Index 3) |
24/06/2026 12:00 |
| Hackney Northwold Road | n/m | 25 (1 Low) | n/m | 18 (2 Low) | 30 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Hackney Old Street | 96 (3 Low) | 21 (1 Low) | n/m | 19 (2 Low) | 129 (10 Very High) | Very High (Index 10) |
24/06/2026 13:00 |
| Hammersmith Town Centre | 45 (2 Low) | 57 (1 Low) | n/m | 17 (2 Low) | 36 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Haringey Wood Green | n/m | 54 (1 Low) | n/m | 15 (2 Low) | 27 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Heathrow Bath Road | n/m | n/a | n/m | n/a | n/a | No Data | 22/06/2026 09:00 |
| Heathrow Green Gates | n/m | 20 (1 Low) | n/m | n/a | n/a | Low (Index 1) |
23/06/2026 14:00 |
| Heathrow LHR2 | n/m | 11 (1 Low) | n/m | 14 (2 Low) | 28 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| Hillingdon Harmondsworth | n/m | 19 (1 Low) | n/m | n/m | 21 (2 Low) | Low (Index 2) |
24/06/2026 06:00 |
| Hillingdon Harmondsworth Osiris | n/m | n/m | n/m | 7 (1 Low) | 39 (3 Low) | Low (Index 3) |
24/06/2026 12:00 |
| Hillingdon Hayes | n/m | 13 (1 Low) | n/m | n/m | 41 (3 Low) | Low (Index 3) |
24/06/2026 12:00 |
| Hillingdon Oxford Avenue | n/m | 9 (1 Low) | n/m | n/m | 31 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| Hillingdon Sipson | n/m | 8 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
24/06/2026 12:00 |
| Hillingdon South Ruislip | n/m | 14 (1 Low) | n/m | n/m | 40 (3 Low) | Low (Index 3) |
24/06/2026 12:00 |
| Hounslow Brentford | n/m | n/a | n/m | n/a | n/a | No Data | 09/06/2026 06:00 |
| Hounslow Chiswick | n/m | 22 (1 Low) | n/m | n/a | n/a | Low (Index 1) |
24/06/2026 10:00 |
| Hounslow Feltham | n/m | 26 (1 Low) | n/m | 21 (2 Low) | 28 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| Hounslow Gunnersbury | n/m | n/a | n/m | n/a | n/a | No Data | 09/06/2026 07:00 |
| Hounslow Hatton Cross | n/m | 20 (1 Low) | n/m | 19 (2 Low) | 32 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Hounslow Heston | n/m | 22 (1 Low) | n/m | 25 (3 Low) | 31 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Islington Arsenal Ecology Centre | n/m | 9 (1 Low) | n/m | 14 (2 Low) | 18 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Islington Holloway Road | n/m | 20 (1 Low) | n/m | 19 (2 Low) | 29 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Kingston Upon Thames Cromwell Road | n/m | 29 (1 Low) | n/m | n/m | 53 (4 Moderate) | Moderate (Index 4) |
24/06/2026 13:00 |
| Kingston Upon Thames Kingston Vale | n/m | 28 (1 Low) | n/m | n/m | 38 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Kingston Upon Thames Tolworth Broadway | n/m | 20 (1 Low) | n/m | 35 (3 Low) | n/m | Low (Index 3) |
24/06/2026 12:00 |
| London City Airport KGV House | n/m | 7 (1 Low) | n/m | 20 (2 Low) | 30 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| London City Airport Newham Dockside | n/m | 8 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
24/06/2026 13:00 |
| Newham Cam Road | n/m | 13 (1 Low) | n/m | 17 (2 Low) | 27 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| Newham East Ham Town Hall | n/m | 14 (1 Low) | n/m | 24 (3 Low) | n/m | Low (Index 3) |
24/06/2026 13:00 |
| Newham Wren Close | n/m | 6 (1 Low) | n/m | 19 (2 Low) | 27 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| RBKC Chelsea Old Town Hall | n/m | 27 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
24/06/2026 12:00 |
| RBKC Cromwell Road | 91 (3 Low) | 17 (1 Low) | n/m | 12 (2 Low) | 24 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| RBKC Earl's Court Road | n/m | 62 (1 Low) | n/m | n/m | 40 (3 Low) | Low (Index 3) |
24/06/2026 12:00 |
| RBKC Knightsbridge | n/m | 33 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
24/06/2026 12:00 |
| Redbridge Gardner Close | n/m | 8 (1 Low) | n/m | n/m | 24 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Redbridge Ley Street | 85 (3 Low) | 22 (1 Low) | n/m | 19 (2 Low) | 26 (2 Low) | Low (Index 3) |
24/06/2026 12:00 |
| Riverwalk | 83 (3 Low) | 10 (1 Low) | n/m | 16 (2 Low) | 27 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Sands End | 107 (4 Moderate) | 16 (1 Low) | n/m | 19 (2 Low) | 31 (2 Low) | Moderate (Index 4) |
24/06/2026 13:00 |
| Shepherds Bush Town Centre | n/m | n/a | n/m | 17 (2 Low) | 32 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| Southwark A2 Old Kent Road (FIDAS) | n/m | n/m | n/m | 5 (1 Low) | 13 (1 Low) | Low (Index 1) |
24/06/2026 12:00 |
| Southwark Elephant and Castle | 94 (3 Low) | 8 (1 Low) | n/m | 19 (2 Low) | 30 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Southwark Lower Road | n/m | 16 (1 Low) | n/m | 19 (2 Low) | 31 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| Southwark South Circular Road | n/m | 9 (1 Low) | n/m | 19 (2 Low) | 28 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| Southwark Tower Bridge Road | n/m | 69 (2 Low) | n/m | 20 (2 Low) | 34 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Southwark Vicarage Grove | n/m | 15 (1 Low) | n/m | 21 (2 Low) | 32 (2 Low) | Low (Index 2) |
24/06/2026 12:00 |
| Sutton Beddington Lane north | n/m | 13 (1 Low) | n/m | 23 (2 Low) | 34 (3 Low) | Low (Index 3) |
24/06/2026 12:00 |
| Sutton Beddington Village 2 | n/m | 21 (1 Low) | n/m | n/m | 35 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Sutton Wallington | n/m | n/a | n/m | n/m | n/a | No Data | 21/06/2024 17:00 |
| Sutton Worcester Park | n/m | 17 (1 Low) | n/m | n/m | 40 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| The Aldgate School | n/m | 20 (1 Low) | n/m | 19 (2 Low) | 30 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| Tower Hamlets - Blackwall | 61 (2 Low) | 23 (1 Low) | n/m | n/a | 35 (3 Low) | Low (Index 3) |
24/06/2026 12:00 |
| Waltham Forest Crooked Billet | n/m | n/a | n/m | n/m | n/a | No Data | 23/06/2026 09:00 |
| Waltham Forest Dawlish Rd | n/m | 6 (1 Low) | n/m | 18 (2 Low) | 28 (2 Low) | Low (Index 2) |
24/06/2026 11:00 |
| Waltham Forest Leyton | n/m | 15 (1 Low) | n/m | n/m | 40 (3 Low) | Low (Index 3) |
24/06/2026 12:00 |
| Westminster - Covent Garden | n/m | 16 (1 Low) | n/m | 17 (2 Low) | n/m | Low (Index 2) |
24/06/2026 13:00 |
| Westminster - Elizabeth Bridge | n/m | 24 (1 Low) | n/m | 18 (2 Low) | n/m | Low (Index 2) |
24/06/2026 13:00 |
| Westminster - Oxford Street | n/m | 15 (1 Low) | n/m | 23 (2 Low) | n/m | Low (Index 2) |
24/06/2026 13:00 |
| Westminster - Queens Park Gardens | 93 (3 Low) | 7 (1 Low) | n/m | 23 (2 Low) | n/m | Low (Index 3) |
24/06/2026 13:00 |
| Wormwood Scrubs | 75 (3 Low) | n/a | n/m | 11 (1 Low) | 20 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Camden Kerbside (Swiss Cottage) | n/m | 21 (1 Low) | n/m | 18 (2 Low) | 35 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Ealing Horn Lane | n/m | n/m | n/m | n/m | 40 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| Haringey Roadside | n/m | 23 (1 Low) | n/m | n/m | n/m | Low (Index 1) |
24/06/2026 13:00 |
| London A406 N Circular | n/m | n/m | n/m | 17 (2 Low) | n/m | Low (Index 2) |
24/06/2026 13:00 |
| London Bexley | n/m | 7 (1 Low) | n/m | 22 (2 Low) | 34 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| London Bloomsbury | 89 (3 Low) | 11 (1 Low) | 1 (1 Low) | 16 (2 Low) | 27 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| London Farringdon Street | n/m | 49 (1 Low) | n/m | 23 (2 Low) | n/m | Low (Index 2) |
24/06/2026 13:00 |
| London Haringey Priory Park South | 73 (3 Low) | 7 (1 Low) | n/m | 14 (2 Low) | 26 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| London Harlington | 65 (2 Low) | 7 (1 Low) | n/m | 13 (2 Low) | 25 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| London Hillingdon | 98 (3 Low) | 8 (1 Low) | n/m | 15 (2 Low) | 31 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| London Honor Oak Park | 99 (3 Low) | n/m | n/m | 21 (2 Low) | 31 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| London Marylebone Road | 96 (3 Low) | 13 (1 Low) | 5 (1 Low) | 19 (2 Low) | 34 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
| London N. Kensington (RBKC North Kensington) | 84 (3 Low) | 5 (1 Low) | 2 (1 Low) | 15 (2 Low) | 25 (2 Low) | Low (Index 3) |
24/06/2026 13:00 |
| London Norbury Manor School | n/m | n/m | n/m | 21 (2 Low) | 31 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| London Teddington Bushy Park | n/m | n/m | n/m | 18 (2 Low) | 30 (2 Low) | Low (Index 2) |
24/06/2026 13:00 |
| London Westminster | 100 (3 Low) | 16 (1 Low) | n/m | n/a | n/m | Low (Index 3) |
24/06/2026 13:00 |
| Southwark A2 Old Kent Road | n/m | 44 (1 Low) | n/m | n/m | 41 (3 Low) | Low (Index 3) |
24/06/2026 13:00 |
» 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:
VERY HIGH ( Index 10)
VERY HIGH ( Index 10)
| Very High | 10 |
| High | 9 |
| 8 | |
| 7 | |
| Moderate | 6 |
| 5 | |
| 4 | |
| Low | 3 |
| 2 | |
| 1 |
Guide to map markers:
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