LAQN Pollution Levels
Hertsmere - Borehamwood (closed)
Watford (Roadside) (closed)
Watford - Watford Town Hall (closed)
Hertsmere Borehamwood 1 (Background) (closed)
Three Rivers - Rickmansworth (closed)
Harrow - Stanmore (Level 2)
Brent - Kingsbury (closed)
Harrow - Pinner Road (Level 2)
Area Map

Peak air pollution levels for Saturday 6 July 2013


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.

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