Data and maps

Nitrogen Dioxide (NO2): annual mean concentrations in Europe: The map shows the annual mean Nitrogen Dioxide (NO2) concentrations in Europe based on daily averages with at least 75% of valid measurements, in µg/m3 (source: EEA, AirBase v.7).
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AirBase - Exchange of information: Location of stations for which 2011 air quality data for components O3, PM10, NO2, SO2, C6H6, PM2.5, Pb, CO have been reported. Observed concentration maps for which 2011 air quality data for components O3, PM10, NO2, SO2, C6H6, PM2.5, CO, BaP, Pb, Cd, As and Ni have been reported.
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NO2 mean and maximum values of annual averages for traffic and urban background stations: Station pairs from capital cities were preferred, but when not available the next largest city for which data was available was chosen
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Annual mean NO2 concentration observed at urban background stations, 2001-2010 (EU-27): Only urban and sub-urban background monitoring stations have been included in the calculations. Data for Cyprus and Malta are not included due to missing availability of operational urban and sub-urban background monitoring stations in the Urban Audit cities.
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Trends in NO2 and PM10 concentrations at urban background and traffic locations: Trends of NO2 and PM10 atmospheric concentration at urban background and traffic locations. Comparison in several European urban area
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Annual mean NO2 concentration observed at traffic stations, 2010 (left) and annual mean PM10 concentration observed at traffic stations, 2010 (right): Annual mean NO2 and PM10 concentration observed at traffic stations, 2010.
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Annual mean NO2 concentration observed at traffic stations, 2009 - Annual mean PM10 concentration observed at traffic stations, 2009: The two highest NO2 concentration classes (red and orange) correspond to the 2010 annual LV (40 μg/m3) and to the LV plus margin of tolerance (42 μg/m3). The two highest PM10 concentration classes (red and orange) correspond to the 2005 annual LV (40 μg/m3), and to a statistically derived level (31 μg/m3) corresponding to the 2005 daily LV. The lowest class corresponds to the WHO air quality guideline for PM10 of 20 μg/m3.
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Exceedance of air quality limit values in urban areas (CSI 004) - Assessment published Nov 2012: Particulate Matter (PM 10 ) In the period 2001-2010, 18-41 % of the urban population in EU-27 was potentially exposed to ambient concentrations of particulate matter (PM 10 ) in excess of the EU limit value set for the protection of human health (50 microgram/m 3 daily mean not to be exceeded more than 35 days a calendar year); (Figure 1). Nitrogen dioxide (NO 2 ) In the period 2001-2010, 6-27 % of the urban population in EU-27 was potentially exposed to ambient nitrogen dioxide (NO 2 ) concentrations above the EU limit value set for the protection of human health (40 microgram NO 2 /m 3 annual mean). There was a slight downwards trend over the period (Figure 1) Ozone (O 3 ) In the period 2001-2010, 15-61 % of the urban population in EU-27 was exposed to ambient ozone concentrations exceeding the EU target value set for the protection of human health (120 microgram O 3 /m 3 daily maximum 8-hourly average, not to be exceeded more than 25 times a calendar year, averaged over three years and to be achieved where possible by 2010). The 61 % of the urban population exposed to ambient ozone concentrations over the EU target value was recorded in 2003, which was the record year. There was no discernible trend over the period (Figure 1). Sulphur dioxide (SO 2 ) In the period 2001-2010, the fraction of the urban population in EU-27 that is potentially exposed to ambient concentrations of sulphur dioxide in excess of the EU limit value set for the protection of human health (125 microgram 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 everywhere in the urban background (Figure 1).
Located in Data and maps › Indicators › Exceedance of air quality limit values in urban areas
Measurement methods used for PM10, PM2.5, O3, NO2, SO2 and CO: -
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Distance-to-target graphs for the annual (top) and hourly (bottom) NO2 limit value, for different station types, 2010: The graphs show the percentage frequency distribution of stations (on the y-axis) in the EU Member States versus the various concentration classes (on the x-axis, in µg/m3). Vertical lines correspond to target or threshold values set by the EU legislation.
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