Abstract
This article is devoted to modelling of contamination of air medium of industrial center evolve three phylum of sources of influence: the industrial enterprises, motor transport and private sector. In this article process of mapping of contamination of air basin by the industrial exhausts, leading the greatest contribution to contamination of city air is described on the example Karaganda. Exhausts from the industrial enterprises are considered as set of point sources, each of which has the characteristics on frame and volumes of exhausts. The chosen mathematical model calculating diffusion of pollutants in atmosphere is based on use of the equation of conduction. Prevalence of pollution for enterprise limits ispredicted. The Gauss model is used at calculation of dispersion of admixtures in the conditions of local weather conditions. The forecast of volume of concentration of contaminants in a ground layer of a free air is carried out.