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
Valence 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
2006 1.8 0.98 1.34 - - - 1.37
2007 1.65 0.9 1.6 - - - 1.38
2008 1.9 0.8 1 - - - 1.23
2009 1.5 0.73 0.86 - - - 1.03
2010 1.55 0.53 0.06 - - - 0.71
2011 1.53 0.75 0.74 - - - 1.01
2012 1.48 0.6 0.26 - - - 0.78
2013 1.43 0.55 0.49 - - - 0.82
2014 1.4 0.5 0.17 - - - 0.69
2015 1.35 0.6 0.17 - - - 0.71

Valence 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
2006 0.85 0.68 0.69 1.8 0.15 - 1
2007 0.8 0.73 0.83 1.16 0.1 0.2 0.88
2008 0.73 0.63 0.66 1.2 0.1 0 0.8
2009 0.68 0.63 0.43 1.4 0.15 0 0.78
2010 0.63 0.63 0.34 2.04 0.15 0 0.91
2011 0.65 0.65 0.8 1.92 0.15 0.2 1.01
2012 0.65 0.58 0.29 1.64 0.25 0 0.79
2013 0.63 0.63 0.51 1.52 - 0.2 0.82
2014 0.6 0.55 0.29 0.52 - 0 0.49
2015 0.63 0.6 0.11 1.6 - 0.2 0.73

Valence Background Annual index chart

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