There are presented data on the non-carcinogenic and carcinogenic risks, the actual morbidity rate ofthe population of the city of Norilsk of the Krasnoyarsk Krai in relation with atmospheric air pollution by chemical substances. Contamination of the ambient air by harmful substances is shown to cause the formation of the unacceptable risks to the population's health. There are established relationships described by the equation of pair correlation between the air pollution indices and morbidity rates of the population. There are determined the proportions of the contributions of enterprises and atmospheric pollutants in the formation of children morbidity. There are detected priority ambient air contaminants for a substantiation of programs of preventive measures.