?In the article results of research concerning ability of atmosphere in self-purification in Saratov and the Saratov region are presented. Dynamics of the atmospheric self-purification coefficient in various areas of the Saratov region is analysed during warm and cold seasons for the long-term period and from 2000 to 2004. The formula of the atmospheric self-purification coefficient’s calculation is improved according to regional climate conditions. Maps of spatial differences in atmospheric ability for self-purification on the territory of Saratov are constructed.
