空气质量预报
空气质量数据提供者: the World Meteorological Organization - surface synoptic observations (WMO-SYNOP) (worldweather.wmo.int) and the Slovak hydrometeorological institute (Slovenský hydrometeorologický ústav) (shmu.sk)
Note that the measurement for NO2 (nitrogen dioxide) are taken from the station: SK:Oslany