The article analyzes the wind directions and speeds typical for compact and linear cities over 5 years using the example of Stavropol and Volgograd, respectively. The results of the analysis allowed us to state that the wind direction and speed can be considered as random variables. Based on this approach, the regularities of the repeatability of wind speeds depending on the direction and time of day are investigated.

Keywords: linear city, cities of compact configuration, wind speed and direction, wind rose, distribution laws, atmospheric air, climatic parameters, Weibull's law, logarithmically normal law, mixed Gaussian distribution

The article deals with the distribution of air flow velocities for cities of compact configuration on the example of the city of Stavropol. The verification of the implementation of Weibull's law for different wind flow velocities in its various directions has been carried out.

Keywords: wind flow direction and velocity, atmospheric air, distribution law, Weibull's law, mixed Gaussian distribution, change in air flow velocities, time of day, compact city

The article considers the main sources of urban air pollution. The growth dynamics of vehicles in the city of Volgograd is shown. The law of the distribution of the concentration of carbon monoxide for a different category of roads (urban, regional and local values), both for the measured and calculated concentration of CO, is derived. It is shown that the concentration of CO on the curb of the roadway of different categories of highways is characterized by a mixed Gaussian distribution.

Keywords: carbon monoxide, category of highways, city significance, regional significance, local significance, main sources of pollution, primary areas, mixed Gaussian distribution, field studies, density function