LAQN Monitoring Statistics




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Achieved Achieved but raised Exceeded No Data Closed
Achieved Achieved but raised Execeeded No Data Closed
Your selected monitoring site » Brent - Neasden Lane
The table below shows whether pollution levels recorded at the site you have selected remained within the Government's Air Quality Strategy Objectives in 2012. For further basic statistics click on the button below, or for more precise statistics, use the Statistics Calculator.
Pollutant Objective Was it achieved? Value
PM10 Particulate 40 ug/m3 as an annual mean YES 39
PM10 Particulate 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year NO 82
PM10 (redundant method) 40 ug/m3 as an annual mean NO 42
PM10 (redundant method) 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year NO 116
Nitrogen Dioxide 200 ug/m3 as a 1 hour mean, not to be exceeded more than 18 times a year YES 0
Nitrogen Dioxide 40 ug/m3 as an annual mean NO 44
* Note that all objectives have been calculated using a method defined in 2013.
* Note that results are excluded where analysers have not returned valid data for at least 90% of the year, unless a short-term objective was exceeded.
* Note - all results from TEOM PM10 analysers from 2004 onward are now converted to reference equiavlence using the volatile correction method. Results using the old 'TEOM*1.3' method are also shown for comparison where relevant. More information.
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