For the first time in Austria, routine monitoring of the ozone layer as well as routine spectral UV measurements have been performed at Sonnblick. Column ozone, ozone profile, SO2 column, Nox column and spectral UV (from 290 to 325 nm) has been measured with a Brewer spectrometer type MKIV (No 093) since 1994. From 1997 on broad band erythemal UV has been recorded with a Robertson Berger biometer. For registration of the spectral ultraviolet irradiance-particularly the spectral UVB-radiation- a Bentham spectrometer (double monochromator) has been adapted so that it can be used under the extreme climatic conditions on a mountain top. Routine measurements of the spectral irradiance in the spectral range of 280-500 nm are performed in 0.5 nm steps every half hour. Additional information on cloudiness is supplied by a upwards looking CCD camera equipped with a fish eye lense. Sonnblick station is embedded in the EDUCE, GAW and WMO networks.