Legend:
Air Quality Index Value
EU Standards are
exceeded by one
pollutant or more
  > 1
EU Standards are
fulfilled on average
  1
The situation is better
than the norms requirements on average
  < 1
Zurich Yearly Air Quality Index

Year NO2 Year average PM10 year average PM10 exceedences daily average O3, # of days with 8-hour average >=120µg/m3 SO2 year average Benzene year average City Index
2003 1.28 0.86 1.14 - 0.22 - 1.09
2004 1.31 0.72 0.71 - 0.27 - 0.91
2005 1.23 0.72 0.63 - 0.18 - 0.86
2006 1.4 0.83 1.6 - 0.2 - 1.28
2007 1.24 0.65 0.46 - 0.11 - 0.78
2008 1.27 0.62 0.49 - 0.17 - 0.79
2009 1.24 0.63 0.46 0.04 0.09 - 0.78
2011 1.17 0.64 0.6 0.32 0.14 - 0.8
2012 1.08 0.51 0.31 0.28 0.15 - 0.64
2013 1.09 0.58 0.63 0.68 0.12 - 0.77
2014 1.08 0.44 0.11 0.08 0.1 - 0.54
2015 1.11 0.48 0.14 0.8 0.1 - 0.58
2016 1.05 0.44 0.06 0.08 - - 0.51

Zurich Roadside Annual index chart



Year NO2 Year average PM10 year average PM10 exceedences daily average O3, # of days with 8-hour average >=120µg/m3 SO2 year average Benzene year average City Index
2003 1.07 0.8 1.26 2.2 0.36 - 1.33
2004 0.96 0.64 0.57 0.68 0.28 - 0.71
2005 0.95 0.66 0.63 0.76 0.26 - 0.75
2006 0.97 0.74 1.26 1.44 0.23 - 1.1
2007 0.88 0.61 0.57 0.84 0.19 - 0.73
2008 0.89 0.56 0.34 0.4 0.16 - 0.55
2009 0.92 0.6 0.34 0.16 0.12 - 0.51
2010 0.9 0.56 0.37 0.8 0.13 - 0.66
2011 0.88 0.55 0.29 0.56 0.09 - 0.57
2012 0.85 0.49 0.23 0.24 0.12 - 0.45
2013 0.84 0.56 0.54 0.88 0.1 - 0.71
2014 0.83 0.42 0.09 0.32 0.1 - 0.41
2015 0.84 0.44 0.09 1.08 0.09 - 0.61
2016 0.78 0.41 0.06 0.32 0.08 - 0.39

Zurich Background Annual index chart

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