Republic Hydrometeorological Service of Serbia (RHMS) is establishment of unified network of meteorological stations in the Kingdom of Serbia. That marks the foundation of national meteorological service in Serbia. Regular meteorological measuring started even before that date. Vladimir Jaksic, Professor in Secondary School, started on 1 January 1848 in Belgrade, on his plot in the part of city called Senjak, regular measuring of temperature, humidity, precipitation, wind and air pressure. After the FHMI was abolished in April 2003, Republic Hydrometeorological Institute of Serbia was entrusted, as its legal successor, with all its responsibilities, especially the international cooperation.