With the active development of Moscow, the number of vehicles on the capital's roads is increasing, and the number of petrol stations is also increasing. Both cars and petrol stations are sources of emissions into the atmosphere, the quality of which is particularly important for the comfortable existence of the population of large cities. The population living in the vicinity of petrol stations is exposed to various pollutants, prolonged exposure to which can cause the development of oncological diseases. In accordance with Р 2.1.10.1920-04 “Guidance on risk assessment for public health upon exposure to chemical substances polluting the environment” the non-carcinogenic acute, non-carcinogenic chronic and carcinogenic risks for public health have been calculated. According to the results of the calculations it was found that the population living near petrol stations is exposed to acute non-carcinogenic risk, which in turn causes discomfort conditions, worsening people's living conditions.