In summer 2006, levels of ground-level ozone were high in southern Europe and north-western Europe, with widespread exceedances of the information threshold value (180 μg/m3, Directive 2002/3/EC). The frequency of these exceedances was higher than those in previous years, though not as high as...

This report gives an overview of reported ground-level ozone concentrations between April and September 2008, and provides a comparison with the last ten years.

Ozone levels during summer 2009 were as low as during summer 2008 and according to several indicators were among the lowest since reporting of Europe-wide data commenced in 1997. In contrast to previous summers, in 2009 there were no pan-European multi-day episodes. Summer 2009 was characterised...

Despite efforts to mitigate ozone pollution, the number of exceedances of EU ground-level ozone concentration standards for protecting human health (Directive 2008/50/EC) remained at sustained levels during summer 2010.