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
Brest 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
2009 1.1 0.75 0.75 - - - 0.87
2010 1.1 0.63 0.63 - - - 0.78
2011 1.1 0.53 0.53 - - - 0.72
2012 1.03 0.48 0.48 - - 0.2 0.66

Brest 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
2009 0.4 0.63 0.63 - - - 0.55
2010 0.45 0.65 0.65 - - - 0.58
2011 0.4 0.58 0.58 - - - 0.52
2012 0.43 0.55 0.55 - 0 0 0.51

Brest Background Annual index chart

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