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LAQN Pollution Levels
Broxbourne (Roadside) (Level 1)
Hertsmere - Borehamwood (Level 3)
Watford (Roadside) (closed)
Watford - Watford Town Hall (Level 1)
Enfield - Church Street (closed)
Hertsmere Bwood 1 (Background) (closed)
Enfield - Bushhill Park (closed)
Enfield - Salisbury School (closed)
Three Rivers - Rickmansworth (no data)
Brentwood - Brentwood Town Hall (Level 1)
Waltham Forest - Chingford (closed)
Enfield - Derby Road (Level 1)
Harrow - Stanmore (Level 1)
Barnet - Tally Ho Corner (Level 2)
Enfield - Bowes Primary School (Level 1)
Havering - Harold Hill (closed)
Haringey - Bounds Green (closed)
Waltham Forest - Crooked Billet (Level 2)
Barnet - Strawberry Vale (closed)
Haringey - Haringey Town Hall (Level 1)
Redbridge - South Woodford (Level 1)
Redbridge - Fullwell Cross (Level 2)
Barnet - Finchley (Level 1)
Brent - Kingsbury (Level 3)
Harrow - Pinner Road (Level 1)
Haringey - Priory Park (Level 3)
Redbridge - Gardner Close (Level 1)
Havering - Romford (Level 1)
Redbridge - Perth Terrace (Level 3)
Barking and Dagenham - Rush Green (Level 1)
Waltham Forest - Mobile (closed)
Waltham Forest - Dawlish Road (Level 1)
Redbridge - Ilford Broadway (closed)
Islington - Foxham Gardens (no data)
Hackney - Clapton (Level 3)
Islington - Arsenal (Level 1)
Waltham Forest - Leyton (Level 1)
Brent - Ikea Car Park (closed)
Islington - Holloway Road (Level 2)
Brent - Ikea (Level 3)
Brent - Neasden Lane (Level 1)
Hillingdon - South Ruislip (Level 1)
Camden - Swiss Cottage (Level 2)
Barking and Dagenham - North Street (Level 1)
Ealing - Greenford (no data)
Islington - Upper Street (closed)
Newham - Cam Road (Level 3)
Brent - John Keble Primary School (Level 1)
Brent - Harlesden (closed)
Brent - St Marys Primary School (Level 1)
Barking and Dagenham - Scrattons Farm (Level 1)
Islington - Duncan Terrace (no data)
Hammersmith and Fulham - Scrubs Lane (closed)
Ealing - Hanger Lane Gyratory (Level 3)
Tower Hamlets - Bethnal Green (Level 1)
Marylebone Rd - Baker St Kerbside (closed)
Hackney - Old Street (Level 2)
Havering - Rainham (Level 2)
Westminster - Marylebone Road FDMS (no data)
Tower Hamlets - Mile End Road (closed)
Tower Hamlets - Mile End Road (Level 1)
Westminster - Marylebone Road (Level 3)
Camden - Bloomsbury (Level 2)
Hillingdon - Hillingdon Hospital (Level 1)
Ealing - Western Avenue (closed)
Ealing - Court Way (closed)
Camden - St Martins College (NOX 2) (Level 1)
City of London - Beech Street (closed)
Kensington and Chelsea - North Ken (Level 3)
Kensington and Chelsea - North Ken FDMS (no data)
Camden - St Martins College (NOX 1) (Level 1)
Tower Hamlets - Blackwall (Level 3)
Newham - Tant Avenue (closed)
Newham - Wren Close (Level 3)
Ealing - Horn Lane (no data)
Camden - Shaftesbury Avenue (Level 2)
City of London - Farringdon Street (closed)
City of London - Sir John Cass School (Level 2)
Bexley - Thamesmead (no data)
Westminster - Covent Garden (closed)
City of London - Senator House (Level 2)
City of London - Walbrook Wharf (Level 3)
Tower Hamlets - Poplar (Level 3)
Ealing - Ealing Town Hall (Level 3)
Westminster - Charing Cross Library (Level 1)
City of London - Upper Thames Street (no data)
Ealing - Southall (Level 1)
Ealing - Acton Town Hall (Level 2)
Ealing - Acton Town Hall FDMS (no data)
Westminster - Victoria Street (closed)
Hammersmith and Fulham - Brook Green (closed)
Kensington and Chelsea - Knightsbridge (Level 1)
Kensington and Chelsea - Cromwell Road (Level 2)
Westminster - Horseferry Road (Level 3)
Greenwich - Millennium Village (Level 1)
Bexley - Belvedere FDMS (no data)
Bexley - Belvedere (Level 1)
Kensington and Chelsea - Pembroke Road (closed)
Westminster - Bridge Place (closed)
Greenwich - A206 Burrage Grove (Level 1)
Hillingdon - Sipson Road (Level 2)
Hounslow - Brentford (closed)
Hounslow - Chiswick High Road (Level 1)
Southwark - Larcom Street (Level 3)
Greenwich - Plumstead High Street (Level 3)
Hammersmith and Fulham - Broadway (closed)
Kensington and Chelsea - Earls Court Rd (Level 3)
Greenwich - Woolwich Flyover (Level 2)
Lambeth - Vauxhall Cross (closed)
Lambeth - Bondway Interchange (Level 2)
Kensington and Chelsea - Kings Road (Level 2)
Greenwich - Trafalgar Road (Level 1)
Thurrock - Purfleet (closed)
Hillingdon - Harlington (Level 3)
Hounslow - Brentford (Level 1)
Bexley - Manor Road West Gravimetric (no data)
Bexley - Manor Road East Gravimetric (closed)
Thurrock - London Road (Grays) (Level 3)
Hounslow - Brentford (closed)
Southwark - Old Kent Road (closed)
Lewisham - Mercury Way (closed)
Bexley - Bedonwell (closed)
Bexley - Erith (Level 1)
Thurrock - London Road (Purfleet) (Level 1)
Richmond - Castelnau (Level 1)
Hounslow - Cranford (Level 3)
Hillingdon - Oxford Avenue (Level 1)
Lewisham - New Cross (Level 1)
Hounslow - Heston Road (Level 1)
Heathrow Airport (Level 2)
Greenwich - Blackheath (Level 1)
Richmond - Barnes Wetlands (Level 3)
Bexley - Slade Green FDMS (no data)
Bexley - Slade Green (Level 3)
Bexley - Thames Road North FDMS (no data)
Bexley - Thames Road North (Level 3)
Lambeth - Brixton Road (no data)
Lambeth - Loughborough Junct (Level 1)
Wandsworth - Putney High Street Facade (closed)
Wandsworth - Putney High Street (closed)
Greenwich and Bexley - Falconwood FDMS (closed)
Greenwich and Bexley - Falconwood (Level 3)
Bexley - Thames Road South (Level 3)
Hounslow - Hatton Cross (no data)
Wandsworth - Town Hall (Level 3)
Greenwich - Westhorne Avenue (Level 3)
Greenwich - Eltham (Level 3)
Dartford Roadside 1 - St Clements (no data)
Wandsworth - Roehampton (closed)
Wandsworth - High Street (closed)
Wandsworth - Garratt Lane (no data)
Dartford Roadside 2 - Town Centre (no data)
Lewisham - Catford (Level 2)
Hounslow - Feltham (closed)
Lambeth - Christchurch Road (Level 2)
Dartford Roadside 3 - Bean Interchange (no data)
Lambeth - Streatham Green (closed)
Crystal Palace - Crystal Palace Parade (Level 2)
Wandsworth - Tooting (Level 1)
Richmond - National Physical Laboratory (Level 3)
Bromley - Rent Office (closed)
Kingston - Town Centre (closed)
Croydon - Norbury (Level 1)
Bromley - Harwood Avenue (Level 1)
Croydon - Thornton Heath (Level 3)
Richmond - Hampton Court Road (closed)
Bromley - Tweedy Rd (closed)
Merton - Morden Civic Centre (closed)
Elmbridge - Hampton Court Parade (Level 1)
Sevenoaks 1 (closed)
Sutton - Beddington Lane (Level 1)
Sutton - Therapia Lane (closed)
Elmbridge - Walton High Street (Level 1)
Croydon - Euston Road (Level 1)
Sutton - Worcester Park (Level 2)
Sutton - North Cheam (closed)
Croydon - George Street (Level 1)
Kingston - Kingston Bypass A3 (closed)
Elmbridge - Bell Farm Hersham (Level 3)
Elmbridge - Esher High Street (no data)
Sutton - Robin Hood School (closed)
Sutton - Carshalton (Level 3)
Croydon - Purley Way (Level 1)
Sutton - Wallington (Level 2)
Kingston - Chessington (closed)
Bromley - Biggin Hill (Level 3)
Mole Valley - Lower Ashtead (closed)
Mole Valley - Leatherhead (closed)
Sevenoaks - Greatness Park (Level 3)
Sevenoaks - Bat and Ball (Level 1)
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Peak air pollution levels recorded on Tuesday 3 March 2009

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Low (1-3) Moderate (4-6) High (7-9)
Low (1-3) Moderate (4-6) High (7-9)
• • •
Very High (10) No Data Closed
Very High (10) No Data Closed
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How the bands are calculated
This map shows daily maximum index values recorded on the date you have selected. Manually checked data from each operational monitoring site is included.
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