This dataset is stored in various subfolders named based on the simulation day to which the modeling results are referring to (i.e. yyyymmdd-hh). The dataset has been operationally produced by the Atmospheric dispersion models applied in ICARUS. Air quality data (NO2, O3, PM10 and PM2.5) and meteorological data (precipitation, relative humidity, temperature, wind speed and direction) are available at European level using an outer grid with dimensions 12x12km consisting of 303 x 303 cells. The dataset has been used within WP3 to assess air quality levels at European scale and to produce concentration maps.The dataset is available in the form of concentration maps stored in png format. Row data in net-CDF format were not stored due to their huge size (i.e. we produced ca. 5,000 files each one of about 55GB). However, raw data in net-CDF format may be shared with interested users by means of individual requests made to the Project Coordinator with the expectation that both the ICARUS project and the European Commission’s Horizon 2020 as the funding program are properly cited.