Health anomalies in children are induced by environmental contamination with pollutants specific for this region due to the long-term running of the Orenburg gas-chemical complex. On assessing the health hazard of exposure to non-carcinogenic chemicals, the authors used such variable as the hazard coefficient. Estimations indicated that the hazard coefficient of non-carcinogenic effects was greater than the allowable level with reference to hydrogen sulfide in all areas under study, as shown by the data of stationary posts. According to the data of route studies, the hazard coefficient exceeded 1 with reference to hydrogen sulfide and nitrogen dioxide. Thus, upon exposure to specific air pollutants, such hydrogen sulfide and nitrogen dioxide, even at the concentrations below the maximum allowable concentration there is an increased hazard of their toxic effect on the population.