The report 'Air pollution in Europe 1990-2004' analyses changes in air pollutant emissions and their possible health or ecosystem impacts in Europe. The report covers the period 1990-2004.
In the 32 EEA member countries measured concentrations of particulate matter and ozone in the air have not shown any improvement since 1997, despite a decrease in emissions. Fine particulate matter (PM2.5) is now generally recognised to be the main threat to human health from air pollution. As sulphur emissions have fallen, ammonia emitted from agricultural activity and nitrogen oxides from combustion processes have become the predominant acidifying and eutrophying agents affecting ecosystems.