The up-to-date (UTD) data are shown for the last ten days as they are provided by the EEA’s Member and Cooperating countries.

Data are delivered to the EEA with a certain delay after measurement, this delay depends on each data provider. In general these data are available in this viewer 2 to 5 hours after measurement.

Data can be filtered based on the type of station and/or of area.

Under “type of station”, the stations are classified in relation to the predominant emission sources: traffic stations, industrial stations and background stations (where the pollution level is not dominated by either traffic or industry).

The classification or “type of area” describes the location with respect to the distribution/density of building. An urban area is a continuously built-up urban area, while a suburban area is characterized by contiguous settlement of detached buildings of any size mixed with non-urbanised areas. A rural area corresponds to an area which does neither fulfil the criteria of urban area nor of suburban area.).


All data is stored and displayed in UTC + 1.

These data are not officially validated and/or verified by the countries and therefore should not be considered for compliance checking against air quality standards.