LAQN Pollution Levels
Broxbourne (Roadside) (closed)
Enfield - Prince of Wales School (Level 1)
Hertsmere - Borehamwood (closed)
Watford (Roadside) (closed)
Watford - Watford Town Hall (closed)
Enfield - Church Street (closed)
Hertsmere Borehamwood 1 (Background) (closed)
Enfield - Bush Hill Park (Level 1)
Enfield - Salisbury School (closed)
Three Rivers - Rickmansworth (closed)
Brentwood - Brentwood Town Hall (Level 1)
Waltham Forest - Chingford (closed)
Enfield - Derby Road (Level 2)
Harrow - Stanmore (Level 1)
Barnet - Tally Ho Corner (closed)
Enfield - Bowes Primary School (no data)
Havering - Harold Hill (closed)
Haringey - Bounds Green (closed)
Waltham Forest - Crooked Billet (closed)
Barnet - Strawberry Vale  (closed)
Haringey - Haringey Town Hall (Level 1)
Redbridge - South Woodford (closed)
Redbridge - Fullwell Cross (closed)
Barnet - Finchley (closed)
Brent - Kingsbury (closed)
Harrow - Pinner Road (Level 1)
Haringey - Priory Park (closed)
Haringey  - Priory Park South (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 (closed)
Redbridge - Ilford Broadway (closed)
Islington - Foxham Gardens (closed)
Hackney - Clapton (closed)
Islington - Arsenal (Level 1)
Waltham Forest - Leyton (closed)
Brent - Ikea Car Park (closed)
Islington - Holloway Road (Level 1)
Brent - Ikea (Level 2)
Brent - Neasden Lane (Level 2)
Hillingdon - South Ruislip (closed)
Camden - Swiss Cottage (Level 2)
Barking and Dagenham - North Street (closed)
Tower Hamlets - Victoria Park (Level 1)
Ealing - Greenford (closed)
Islington - Upper Street (closed)
Newham - Cam Road (closed)
Brent - John Keble Primary School (Level 1)
Brent - Harlesden (closed)
Brent - St Marys Primary School (closed)
Barking and Dagenham - Scrattons Farm (no data)
Islington - Duncan Terrace (closed)
Hammersmith and Fulham - Scrubs Lane (closed)
Ealing - Hanger Lane Gyratory (Level 1)
Camden - Euston Road (Level 2)
Tower Hamlets - Bethnal Green (closed)
Hackney - Old Street (Level 2)
Havering - Rainham (Level 1)
Westminster - Marylebone Road FDMS (Level 1)
Tower Hamlets - Mile End Road (Level 1)
Westminster - Marylebone Road (Level 2)
Marylebone Road - WIBS (closed)
Camden - Bloomsbury (Level 2)
Hillingdon - Hillingdon Hospital (closed)
Ealing - Western Avenue (Level 2)
Ealing - Court Way (closed)
Camden - St Martins College (NOX 2) (closed)
City of London - Beech Street (Level 2)
Kensington and Chelsea - North Ken (Level 1)
Kensington and Chelsea - North Ken FDMS (Level 1)
Camden - St Martins College (NOX 1) (closed)
Tower Hamlets - Blackwall (Level 2)
Newham - Tant Avenue (closed)
Newham - Wren Close (closed)
Ealing - Horn Lane (Level 1)
Camden - Shaftesbury Avenue (Level 2)
City of London - Farringdon Street (no data)
City of London - Sir John Cass School (Level 1)
Bexley - Thamesmead (no data)
Westminster - Oxford Street (Level 2)
Westminster - Covent Garden (closed)
City of London - Senator House (closed)
City of London - Walbrook Wharf (Level 1)
Tower Hamlets - Poplar (Level 1)
Ealing - Ealing Town Hall (closed)
Westminster - Charing Cross Library (closed)
City of London - Upper Thames Street (no data)
Ealing - Southall (Level 1)
Ealing - Southall FDMS (Level 1)
Ealing - Acton Town Hall (Partisol) (closed)
Ealing - Acton Town Hall (closed)
Ealing - Acton Town Hall FDMS (closed)
Ealing - Southall Railway (Level 1)
Hammersmith and Fulham - Shepherds Bush (Level 2)
Westminster - Victoria Street (closed)
Bexley - Belvedere West (no data)
Bexley - Belvedere West FDMS (no data)
Hounslow and Ealing - Gunnersbury Avenue (Level 1)
Hammersmith and Fulham - Brook Green (closed)
Kensington and Chelsea - Knightsbridge (Level 2)
Kensington and Chelsea - Cromwell Road (Level 1)
Westminster - Horseferry Road (Level 2)
Greenwich - Millennium Village (Level 1)
Bexley - Belvedere FDMS (Level 1)
Bexley - Belvedere (Level 1)
Kensington and Chelsea - Pembroke Road (closed)
Westminster - Bridge Place (closed)
Southwark - Elephant and Castle (Level 1)
Greenwich - A206 Burrage Grove (Level 2)
Hillingdon - Sipson Road (Level 3)
Hounslow - Brentford (closed)
Hounslow - Chiswick High Road (closed)
Southwark - Larcom Street (closed)
Greenwich - Plumstead High Street (Level 2)
Hammersmith and Fulham - Broadway (closed)
Kensington and Chelsea - Earls Court Rd (Level 2)
Greenwich - Woolwich Flyover (Level 2)
Lambeth - Vauxhall Cross (closed)
Lambeth - Bondway Interchange (no data)
Kensington and Chelsea - Kings Road (no data)
Greenwich - Trafalgar Road (Level 1)
Thurrock - Purfleet (closed)
Hillingdon - Harlington (no data)
Hounslow - Brentford (closed)
Bexley - Manor Road West Gravimetric (no data)
Thurrock - London Road (Grays) (no data)
Hounslow - Brentford (closed)
Southwark - Old Kent Road (closed)
Lewisham - Mercury Way (Level 3)
Bexley - Bedonwell  (closed)
Bexley - Manor Road East Gravimetric (no data)
Bexley - Erith (Level 2)
Thurrock - London Road (Purfleet) (Level 1)
Richmond Upon Thames - Castlenau (Level 1)
Southwark - A2 Old Kent Road (Level 2)
Hounslow - Cranford (closed)
Wandsworth - Battersea (Level 1)
Hillingdon - Oxford Avenue (closed)
Lewisham - New Cross (Level 1)
Hounslow - Heston Road (closed)
Heathrow Airport (closed)
Greenwich - Blackheath (Level 2)
Richmond Upon Thames - Barnes Wetlands (Level 3)
Bexley - Slade Green FDMS (Level 1)
Bexley - Slade Green (Level 3)
Lewisham - Loampit Vale (Level 1)
Bexley - Thames Road North FDMS (closed)
Bexley - Thames Road North (closed)
Lambeth - Brixton Road (no data)
Lambeth - Loughborough Junct (closed)
Wandsworth - Putney (Level 1)
Wandsworth - Putney High Street Facade (Level 2)
Bexley 8 - Traffic(W slow - nearest BX8) (closed)
Bexley 8 - Traffic(W fast) (closed)
Bexley 8 - Traffic(E fast) (closed)
Bexley 8 - Traffic(E slow - nearest BX7) (closed)
Wandsworth - Putney High Street (Level 2)
Greenwich and Bexley - Falconwood FDMS (Level 2)
Greenwich and Bexley - Falconwood (Level 2)
Bexley - Thames Road South (closed)
Hounslow - Hatton Cross (closed)
Wandsworth - Wandsworth Town Hall (Level 2)
Greenwich - Westhorne Avenue (Level 2)
Greenwich - Eltham (Level 3)
Dartford Roadside - St Clements (no data)
Wandsworth - Roehampton (closed)
Wandsworth - High Street (closed)
Wandsworth - Garratt Lane (closed)
Dartford Roadside 2 - Town Centre (no data)
Lewisham - Catford (Level 2)
Hounslow - Feltham (closed)
Lambeth - Christchurch Road (closed)
Richmond Upon Thames - Hanworth Road (Level 1)
Dartford Roadside 3 - Bean Interchange (no data)
Greenwich - Fiveways Sidcup Rd A20 (Level 1)
Lambeth - Streatham Green (no data)
Crystal Palace - Crystal Palace Parade (closed)
Wandsworth - Tooting (closed)
Richmond Upon Thames - Ntl Physical  Lab (Level 3)
Merton - Merton Road (Level 2)
Bromley - Rent Office (closed)
Kingston - Town Centre (closed)
Croydon - Norbury (Level 2)
Bromley - Harwood Avenue (closed)
Croydon - Thornton Heath (closed)
Bromley - Tweedy Rd (closed)
Merton - Morden Civic Centre (Level 1)
Elmbridge - Hampton Court Parade (closed)
Sevenoaks 1 (closed)
Sutton - Beddington Lane north (closed)
Sutton - Therapia Lane (closed)
Sutton - Beddington Lane (Level 1)
Elmbridge - Walton High Street (closed)
Croydon - Euston Road (closed)
Sutton - Worcester Park (Level 2)
Sutton - North Cheam (closed)
Croydon - George Street (Level 1)
Kingston - Kingston Bypass A3 (closed)
Elmbridge - Bell Farm Hersham (closed)
Elmbridge - Esher High Street (closed)
Sutton - Robin Hood School (closed)
Sutton - Carshalton (Level 2)
Croydon - Purley Way A23 (Level 1)
Croydon - Purley Way (closed)
Sutton - Wallington (Level 2)
Kingston - Chessington (closed)
Bromley - Biggin Hill (closed)
Mole Valley - Lower Ashtead (closed)
Mole Valley - Leatherhead (closed)
Sevenoaks - Greatness Park (Level 1)
Sevenoaks - Bat and Ball (Level 1)

Air pollution levels for Saturday 25 May 2013, 12:00-13:00BST


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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

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This map shows the daily air quality index 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.

Your selected monitoring site » Brent - Harlesden
Your selected bulletin type » hourly
Species Air Pollution Index/Value
Site closed on 03 Nov 2006: View the Government's health advice for this level of air pollution
What do these symbols mean?

Air pollution banding Value Accompanying health messages for at-risk groups and the general population
At-risk individuals * General population
Low 1-3 Enjoy your usual outdoor activities. Enjoy your usual outdoor activities.
Moderate 4-6 Adults and children with lung problems, and adults with heart problems, who experience symptoms, should consider reducing strenuous physical activity, particularly outdoors. Enjoy your usual outdoor activities.
High 7-9 Adults and children with lung problems, and adults with heart problems, should reduce strenuous physical exertion, particularly outdoors, and particularly if they experience symptoms. People with asthma may find they need to use their reliever inhaler more often. Older people should also reduce physical exertion. Anyone experiencing discomfort such as sore eyes, cough or sore throat should consider reducing activity, particularly outdoors.
Very High 10 Adults and children with lung problems, adults with heart problems, and older people, should avoid strenuous physical activity. People with asthma may find they need to use their reliever inhaler more often. Reduce physical exertion, particularly outdoors, especially if you experience symptoms such as cough or sore throat.
* Adults and children with heart or lung problems are at greater risk of symptoms. Follow your doctor's usual advice about exercising and managing your condition. It is possible that very sensitive individuals may experience health effects even on Low air pollution days.
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