A method for source selective real-time monitoring and mapping of environmental noise, comprising the steps of ● identifying sources in the area; ● designing places for the monitoring stations; ● creating a data collecting and data processing center; ● measuring the noise impact, and observation of the sources with the sensors; ● defining the noise propagation; ● assemblying the monitoring stations including a sound measuring device, a computing unit and a communication unit; ● determining the resultant noise impact prevailing in the respective measurement points; ● determining the sources dominant in the individual moments on the basis of the data of the sensors; ● determining the average noise impact of the respective sources for a longer period; ● obtaining an average noise impact; ● extending the measurement into a noise impact map; ● calculating the effective noise impact of every noise source in every point of the area for every period; ● producing the effective noise impact map of the respective periods.