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LAQN Pollution Levels
Broxbourne (Roadside) (no data)
Hertsmere Borehamwood 2 (Background) (no data)
Watford (Roadside) (closed)
Watford (Roadside) (Level 2)
Enfield 2 - Church Street (closed)
Hertsmere B'wood 1 (Background) (closed)
Enfield 1 - Bushhill Park (Level 1)
Enfield 3 - Salisbury Sch Ponders End (closed)
Three Rivers Rickmansworth (Background) (no data)
Waltham Forest 3 - Chingford (FDMS) (closed)
Waltham Forest 3 - Chingford (closed)
Brentwood 1 - Town Hall (Level 1)
Enfield 4 - Derby Road Upper Edmonton (Level 1)
Harrow 1 - Stanmore Background (Level 1)
Enfield 5 - Bowes Road A406 (no data)
Barnet 1 - Tally Ho Corner (no data)
Havering 2 - Harold Hill (closed)
Haringey 3 - Bounds Green (closed)
Waltham Forest 4 - Crooked Billet (Level 2)
Barnet 3 - Strawberry Vale (closed)
Haringey 1 - Town Hall (Level 2)
Redbridge 3 - Fullwell Cross (Level 1)
Redbridge 5 - A406 Southend Rd (Level 1)
Barnet 2 - Finchley (no data)
Brent 1 - Kingsbury AURN (Level 1)
Harrow 2 - North Harrow Roadside (Level 2)
Haringey 2 - Priory Park (Level 1)
Redbridge 4 - Gardner Close (Level 1)
Havering 3 - Romford (Level 2)
Redbridge 1 - Perth Terrace (Level 1)
Barking and Dagenham 1 - Rush Green (no data)
Waltham Forest 1 - Dawlish Road (no data)
Waltham Forest 2 - Mobile (closed)
Redbridge 2 - Ilford Broadway (closed)
Islington 4 - Foxham Gardens (no data)
Hackney 4 - Clapton (Level 1)
Islington 6 - Arsenal (Level 2)
Waltham Forest 5 - Leyton (Level 1)
Brent 2 - Ikea Car Park (closed)
Islington 2 - Holloway Road (Level 3)
Brent 4 - Ikea (Level 1)
Brent 5 - Neasden Lane (Level 6)
Hillingdon 1 - South Ruislip (no data)
Camden 1 - Swiss Cottage (Level 2)
Barking and Dagenham 3 - North Street (Level 1)
Ealing 10 - Greenford (no data)
Islington 1 - Upper Street (closed)
Brent 6 - John Keble Primary School (Level 2)
Brent 3 - Harlesden (closed)
Brent 7 - St Mary's Primary School (Level 2)
Barking and Dagenham 2 - Scrattons Farm (Level 2)
Islington 5 - Duncan Terrace (no data)
Hammersmith and Fulham 3 - Scrubs Lane (closed)
Ealing 6 - Hanger Lane (Level 1)
Tower Hamlets 3 - Bethnal Green (Level 2)
Havering 1 - Rainham (Level 1)
Hackney 6 - Old Street (Level 2)
Tower Hamlets 2 - Mile End Rd (Level 1)
Marylebone Rd - Baker St (Level 3)
Bloomsbury - AURN (no data)
Hillingdon 2 - Hillingdon Hospital (no data)
Ealing 9 - Court Way Acton (closed)
Camden 5 - St Martins College, NOX 2 (Level 1)
City of London - Beech Street (no data)
Kens and Chelsea 1 - North Kensington (Level 2)
Camden 4 - St Martins College, NOX 1 (no data)
Ealing 8 - Horn Lane (Level 4)
Tower Hamlets 4 - Blackwall (no data)
Camden 3 - Shaftesbury Avenue (Level 2)
City of London - Farringdon Street (no data)
City of London - Sir John Cass School (no data)
Bexley 3 - Thamesmead (no data)
City of London 1 - Senator House (no data)
City of London - Wallbrook Wharf (no data)
Tower Hamlets 1 - Poplar (no data)
Ealing 1 - Ealing Town Hall (Level 1)
Westminster 4 - Charing Cross Library (no data)
Ealing 2 (F) - Acton Town Hall (no data)
Ealing 7 - Southall (no data)
Ealing 2 - Acton Town Hall (Level 2)
Victoria Street - TRL (closed)
Hammersmith and Fulham 2 - Brook Green (no data)
Kens and Chelsea 3 - Knightsbridge (Level 1)
Kens and Chelsea 2 - Cromwell Rd (Level 2)
Westminster AURN (no data)
Greenwich 12 - Millennium Village (Level 1)
Bexley 2 - Belvedere (Level 1)
Bexley 2 (F) - Belvedere (no data)
Thurrock Black Smoke (no data)
West London - AURN (closed)
Greenwich 10 - A206, Burrage Grove (no data)
Greenwich 10 - A206 Burrage Grove (Level 1)
Hillingdon - AURN (no data)
Hounslow 1 - Brentford (closed)
Hounslow 4 - Chiswick High Rd (no data)
Southwark 1 - Elephant and Castle (Level 2)
Greenwich 13 - Plumstead High Street (Level 1)
Hammersmith and Fulham 1 - Broadway (no data)
Hammersmith and Fulham 1 - Broadway (Level 1)
Kens and Chelsea 5 - Earls Court Rd (no data)
Greenwich 8 - Woolwich Flyover (Level 3)
Lambeth 2 - Vauxhall Cross (closed)
Hounslow 5 - Brentford (Level 3)
Kens and Chelsea 4 - Kings Rd (no data)
Greenwich 5 - Trafalgar Road (Level 2)
Thurrock - Purfleet (closed)
Harlington - AURN (no data)
Thurrock 8 - Purfleet B (Level 1)
Thurrock 1 - AURN (Level 2)
Hounslow 3 - Brentford (closed)
Lambeth 5 - Spare (closed)
Lambeth 5 (Level 1)
Southwark 2 - Old Kent Road (closed)
Bexley 5 - Bedonwell (closed)
Bexley 4 - Erith (Level 2)
Richmond 1 - Castelnau (Level 1)
Hounslow 2 - Cranford (Level 1)
Hillingdon 3 - Oxford Avenue (no data)
Lewisham 2 - New Cross (Level 1)
Heathrow Airport (no data)
Richmond 2 - Barnes Wetlands (Level 1)
Greenwich 7 - Blackheath (Level 1)
Greenwich 7 - Blackheath (no data)
Richmond 29 - Mortlake Road, Kew (no data)
Bexley 1 - Slade Green AURN (Level 1)
Bexley 7 (F) - Thames Rd North (no data)
Bexley 7 - Thames Rd North (Level 2)
Lambeth 4 - Brixton Road (no data)
Lambeth 3 - Loughborough Junct (no data)
Bexley 8 - Thames Rd South (Level 1)
Wandsworth 2 - Town Hall (Level 1)
Greenwich 9 - Westhorne Ave (Level 1)
Greenwich Bexley 6 - A2 Falconwood (Level 1)
Greenwich 4 - Eltham (Level 1)
Greenwich 4 - Eltham (FDMS) (no data)
Dartford Roadside 1 - St Clements (no data)
Wandsworth 3 - Roehampton (closed)
Wandsworth 1 - Garett Lane (no data)
Wandsworth 4 - High Street (closed)
Wandsworth 4 - High Street (closed)
Dartford Roadside 2 - Town Centre (no data)
Lewisham 1 - Catford (Level 1)
Lambeth 1 - Christchurch Road (Level 1)
Dartford Roadside 3 - Bean Interchange (no data)
Wandsworth 6 - Tooting (Level 1)
Crystal Palace 1 - C Palace Parade (Level 1)
Teddington - AURN (no data)
Bromley Rent office (closed)
Kingston 2 - Town Centre (closed)
Croydon 5 - Norbury (no data)
Bromley 7 - Central (Level 1)
Bromley 4 - Tweedy Rd (closed)
Croydon 3 - Thornton Heath (Level 1)
Sevenoaks 1 (closed)
Sutton 5 - Beddington Lane (Level 2)
Croydon 6 - Euston Road (Level 1)
Sutton 2 - North Cheam (closed)
Croydon 4 - George Street (Level 2)
Elmbridge 1 - Bell Farm, Hersham (no data)
Elmbridge 2 - Esher High Street (no data)
Sutton 3 - Carshalton (Level 1)
Sutton 1 - Town Centre (closed)
Croydon 2 - Purley Way (no data)
Sutton 4 - Wallington (Level 2)
Kingston 1 - Chessington (closed)
Bromley 5 - Biggin Hill (Level 1)
Mole Valley 2 - Lower Ashtead (closed)
Mole Valley 1 - Leatherhead (closed)
Sevenoaks Background - Greatness (Level 2)
Sevenoaks Roadside - Bat and Ball (no data)
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Air pollution levels recorded on Friday 29 August 2008, 00:00-01:00BST
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Low (1-3) Moderate (4-6) High (7-9)
Low (1-3) Moderate (4-6) High (7-9)
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Very High (10) No Data Closed
Very High (10) No Data Closed
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How the bands are calculated
This map shows the latest hourly readings downloaded from LAQN pollution analysers. Not all analysers on the network are contacted every hour, so some sites may show 'no data'. Data have undergone automatic validity checks.
You can find out more information about each location (monitoring site) by clicking on its dot on the map. Once selected you can find out further information by clicking the 'Site Details' link above.

Click the 'Statistics' link above to see results from this site compared to national limit values. Past pollution episodes can be seen by clicking on the 'Episodes' link.

Alternatively, click on the button below to see a graph of this week's pollution levels.
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