LAQN Monitoring Statistics
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2021 Air Quality Strategy Objective Statistics: All Objectives

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Achieved Exceeded  
Achieved Exceeded  
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What are the AQS Objectives
Your selected monitoring site » Greenwich - Eltham
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The table below shows whether pollution levels recorded at the site you have selected remained within the Government's Air Quality Strategy Objectives in 2021 (to date). For further basic statistics click on the button below, or for more precise statistics, use the Statistics Calculator.
Pollutant Objective Is it achieving? Value
PM2.5 Particulate 25 ug/m3 as an annual mean YES 8
PM10 Particulate 40 ug/m3 as an annual mean YES 12
PM10 Particulate 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year YES 0
Ozone 100 ug/m3 as an 8 hour mean, not to be exceeded more than 10 times a year YES 4
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 YES 14
* Note that all objectives have been calculated using a method defined in 2013.
* Note that these results cover from the start of the year to now, and are still subject to change until the end of the year. Annual means can only be assessed at the end of the year, and any figures indicate current progress only. Figures for the current year do not take data capture rate into account.
* Note that this information is calculated twice daily, so may not reflect the latest data.
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