Annual AQI Trend

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Air Pollutant Concentrations Trend - Tsuen Wan

YEAR NO2 PM10 PM2.5
2016 56 31 21
2015 59 36 24
2014 57 42 28
2013 63 47 31
2012 61 42 29
2011 64 50 35
2010 63 45 30
2009 61 49 32
2008 64 53 37
2007 64 59 41
2006 64 57 41
2005 61 58 43
2004 69 63 46
2003 NA NA NA
2002 64 51 35
2001 63 53 37
2000 61 50 33
1999 67 54 37
* Pollutant concentrations in micrograms per cubic metre (μg/m3)

AAQI Long Term Trend - Tsuen Wan

YEAR NO2 PM10 PM2.5
2016 1.4 1.6 2.1
2015 1.5 1.8 2.4
2014 1.4 2.1 2.8
2013 1.6 2.4 3.1
2012 1.5 2.1 2.9
2011 1.6 2.5 3.5
2010 1.6 2.3 3.0
2009 1.5 2.5 3.2
2008 1.6 2.7 3.7
2007 1.6 3.0 4.1
2006 1.6 2.9 4.1
2005 1.5 2.9 4.3
2004 1.7 3.2 4.6
2003 NA NA NA
2002 1.6 2.6 3.5
2001 1.6 2.7 3.7
2000 1.5 2.5 3.3
1999 1.7 2.7 3.7
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Last revision date:18:06 24-11-2017