This report analyzes air quality in Europe from 2002-2011. While air pollution regulations have reduced some pollutants, air quality standards are still exceeded in many cities. Poor air quality negatively impacts public health by contributing to respiratory and cardiovascular diseases. Major sources of air pollution include transportation, industry, energy production, agriculture, and residential biomass burning. The European Union seeks to establish air quality levels that do not pose unacceptable health or environmental risks, but this goal has yet to be achieved for many European citizens.