Since the end of the 80's, the Belgium Institute for Space Aeronomy (IASB) has developed an automatic station to measure continuously the UV (UV-B & UVA) - Visible Solar irradiance (280-600 run) at the Earth's surface. The IASB monitoring station consists in a combination of instruments including spectro-radiometer, filter-radiometers and broadband radiometers providing absolute values of the total, direct and diffuse components of the Solar irradiance. The IASB data set is completed by ancillary measurements e;g; Ozone and SO2 total column, Ozone concentration profiles, meteorological conditions ... mainly provided by the Royal Meteorological Institute of Belgium (KMI/IRM). From the available 11-years period of continuous measurements, it is possible to define the major characteristics of the UV climatology in Belgium and by extension I the 50° - latitude area.