Spatial distribution of exposure to four air pollutants across Europe, 2013-2014

The maps use a colour gradient to show the population-weighted average PM2.5 (top left), PM10 (top right), NO2 (bottom left) and O3 (bottom right) concentrations (µg/m3) by NUTS 3 region, for the years 2013 and 2014. The colour scale varies from dark green representing low values, purple representing high values.