LAQN Pollution Levels
Broxbourne (Roadside) (closed)
Enfield - Prince of Wales School (Level 1)
Enfield - Church Street (closed)
Enfield - Bush Hill Park (Level 1)
Enfield - Salisbury School (closed)
Brentwood - Brentwood Town Hall (Level 1)
Enfield - Derby Road (Level 2)
Barnet - Tally Ho Corner (closed)
Enfield - Bowes Primary School (no data)
Barnet - Strawberry Vale  (closed)
Barnet - Finchley (closed)
Brent - Kingsbury (closed)
Barking and Dagenham - Rush Green (Level 1)
Brent - Ikea Car Park (closed)
Brent - Ikea (Level 2)
Brent - Neasden Lane (Level 2)
Camden - Swiss Cottage (Level 2)
Barking and Dagenham - North Street (closed)
Ealing - Greenford (closed)
Brent - John Keble Primary School (Level 3)
Brent - Harlesden (closed)
Brent - St Marys Primary School (closed)
Barking and Dagenham - Scrattons Farm (Level 2)
Ealing - Hanger Lane Gyratory (Level 2)
Camden - Euston Road (no data)
Camden - Bloomsbury (Level 2)
Ealing - Western Avenue (Level 2)
Ealing - Court Way (closed)
Camden - St Martins College (NOX 2) (closed)
City of London - Beech Street (Level 3)
Camden - St Martins College (NOX 1) (closed)
Ealing - Horn Lane (Level 3)
Camden - Shaftesbury Avenue (Level 2)
City of London - Farringdon Street (no data)
City of London - Sir John Cass School (Level 2)
Bexley - Thamesmead (no data)
City of London - Senator House (closed)
City of London - Walbrook Wharf (Level 2)
Ealing - Ealing Town Hall (closed)
City of London - Upper Thames Street (Level 2)
Ealing - Southall (Level 2)
Ealing - Southall FDMS (no data)
Ealing - Acton Town Hall (Partisol) (closed)
Ealing - Acton Town Hall (closed)
Ealing - Acton Town Hall FDMS (closed)
Ealing - Southall Railway (Level 2)
Bexley - Belvedere West (Level 2)
Bexley - Belvedere West FDMS (Level 2)
Kensington and Chelsea - Cromwell Road (no data)
Westminster - Horseferry Road (Level 2)
Bexley - Belvedere FDMS (Level 2)
Bexley - Belvedere (Level 1)
Kensington and Chelsea - Pembroke Road (closed)
Westminster - Bridge Place (closed)
Hillingdon - Sipson Road (Level 2)
Hillingdon - Harlington (no data)
Bexley - Manor Road West Gravimetric (no data)
Bexley - Bedonwell  (closed)
Bexley - Manor Road East Gravimetric (no data)
Bexley - Erith (Level 3)
Bexley - Slade Green FDMS (Level 2)
Bexley - Slade Green (Level 2)
Bexley - Thames Road North FDMS (closed)
Bexley - Thames Road North (closed)
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)
Greenwich and Bexley - Falconwood FDMS (Level 2)
Greenwich and Bexley - Falconwood (Level 2)
Bexley - Thames Road South (closed)
Crystal Palace - Crystal Palace Parade (closed)
Richmond Upon Thames - Ntl Physical  Lab (Level 1)
Bromley - Rent Office (closed)
Croydon - Norbury (Level 2)
Bromley - Harwood Avenue (closed)
Croydon - Thornton Heath (closed)
Bromley - Tweedy Rd (closed)
Elmbridge - Hampton Court Parade (closed)
Elmbridge - Walton High Street (closed)
Croydon - Euston Road (closed)
Croydon - George Street (Level 2)
Kingston - Kingston Bypass A3 (closed)
Elmbridge - Bell Farm Hersham (closed)
Elmbridge - Esher High Street (closed)
Croydon - Purley Way A23 (Level 1)
Croydon - Purley Way (closed)
Bromley - Biggin Hill (closed)

Air pollution levels for Tuesday 21 May 2013, 19:00-20:00BST


How is the index calculated?   Switch to Google Map

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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 » Bexley - Belvedere West
Your selected bulletin type » hourly
Species Air Pollution Index/Value
Nitrogen Dioxide: View the Government's health advice for this level of air pollution
Ozone: View the Government's health advice for this level of air pollution
PM10 Particulate: View the Government's health advice for this level of air pollution
What do these symbols mean?
This week's pollution graph

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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