https://www.eea.europa.eu/data-and-maps/indicators/exceedance-of-air-quality-limit/exceedance-of-air-quality-limit Particulate Matter (PM 10 ) In the period 1997-2002, 25-55% of the urban population was potentially exposed to ambient air concentrations of fine particulate matter (PM 10 ) in excess of the EU limit value set for the protection of human health (50  microgramme/m 3 daily mean  not be exceeded more than 35 days a calendar year). Nitrogen dioxide (NO 2 ) In the period 1996-2002, 25-50% of the urban population was potentially exposed to ambient air nitrogen dioxide (NO 2 ) concentrations above the EU limit value set for the protection of human health (40 microgramme NO 2 /m 3 annual mean). No exceedances of the short-term limit value (200 microgramme NO 2 /m 3 as an hourly value, not to be exceeded more than 18 times a calendar year) were observed. Ozone (O 3 ) In the period 1996-2002, 20-30% of the urban population in Europe was exposed to ambient ozone concentrations exceeding the EU target value set for the protection of human health (120 microgramme O 3 /m 3 daily maximum 8-hourly average, not to be exceeded more than 25 times a calendar year). Sulphur dioxide (SO 2 ) In the period 1996-2002, t he fraction of the urban population in EEA-31 that is potentially exposed to ambient air concentrations of sulphur dioxide in excess of the EU limit value set for the protection of human health (125 microgramme SO 2 /m 3 daily mean not to be exceeded more than three days a year), decreased to less than 1%, and as such the EU limit value set is close to being met.   en Plone https://www.eea.europa.eu/eea-print-logo.gif https://www.eea.europa.eu/data-and-maps/indicators/exceedance-of-air-quality-limit/exceedance-of-air-quality-limit https://www.eea.europa.eu/data-and-maps/indicators/exceedance-of-air-quality-limit/exceedance-of-air-quality-limit/what-progress-is-being-made?utm_source=EEASubscriptions&utm_medium=RSSFeeds&utm_campaign=Generic https://www.eea.europa.eu/data-and-maps/indicators/exceedance-of-air-quality-limit/exceedance-of-air-quality-limit/what-progress-is-being-made?utm_source=EEASubscriptions&utm_medium=RSSFeeds&utm_campaign=Generic Mon, 05 Jul 2010 16:33:21 GMT alec