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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
La Roche-sur-Yon 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

La Roche-sur-Yon 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
2008 0.38 0.45 0.17 0.32 - - 0.33
2009 0.38 0.63 0.43 0.28 0 - 0.43
2010 0.4 0.65 0.2 0.84 - - 0.52
2011 0.35 0.58 0.43 0.52 - - 0.47
2012 0.35 0.6 0.26 0.36 - - 0.39
2013 0.33 0.48 0.14 0.88 - - 0.46
2014 0.3 0.5 0.17 0.32 - - 0.32
2015 0.27 0.53 0.17 0.32 - - 0.32
2016 0.28 0.43 0.09 0.16 - - 0.24
2017 0.28 0.43 0.09 0.12 - - 0.23

La Roche-sur-Yon Background Annual index chart

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