LAQN Pollution Levels
Thurrock - London Road (Purfleet) (Level 2)
Elmbridge - Hampton Court Parade (closed)
Elmbridge - Walton High Street (closed)
Castle Point - Hadleigh (closed)
Dacorum - High Street Northchurch (closed)
Windsor and Maidenhead - Aldebury Road (Level 1)
Thurrock - Dock Road Tilbury (closed)
Sevenoaks - Sevenoaks Quarry (closed)
Reigate and Banstead - Horley South East (Level 1)
Reigate and Banstead- Earlswood Depot (Level 2)
Thurrock - Calcutta Road Tilbury (closed)
Brentwood - Brentwood Town Hall (closed)
Castle Point - Canvey Island (closed)
Thurrock - Stanford-le-Hope (Level 2)
Windsor and Maidenhead - Frascati Way (Level 1)
Thurrock - Purfleet (closed)
Thurrock - London Road (Grays) (Level 3)
Windsor and Maidenhead - Clarence Road (Level 1)
Windsor and Maidenhead - Ascot (closed)
Elmbridge - Bell Farm Hersham (closed)
Elmbridge - Esher High Street (closed)
Mole Valley - Leatherhead (closed)
Mole Valley - Lower Ashtead (closed)
Sevenoaks - Bat and Ball (Level 2)
Mole Valley - Dorking (closed)
Sevenoaks - Greatness Park (Level 3)
Reigate and Banstead - Reigate High St (closed)
Reigate and Banstead - A23 Hooley (Level 1)
Reigate and Banstead - Horley (Level 2)
Reigate and Banstead - Horley South (closed)
Reigate and Banstead - Poles Lane (Level 3)
London Air Quality NetworkHerts and Beds Air Pollution Monitoring Network

Peak air pollution levels for Tuesday 23 June 2020


How is the index calculated?

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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 daily maximum index values for the date you have selected. Manually checked data from each operational monitoring site is included.
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.

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