Measurements of the vertical profile of aerosols parameters, wind velocity and di- rection in the Observatory of ecological safety, Research Park, St. Petersburg University in the center of St. Petersburg was held from the beginning of 2014, the height of laser sounding of wind characteristics of up to 12 km and of aerosols properties is up to 25 km. The results of vertical profiling aerosol particles and wind parameters above the central part of St. Petersburg in day and night obtained from observations 5 March 2015 time are presented. Results include profiling the extinction and backscattering coefficients, particle size distribution, depolarization rate, par- ticle concentration and real and imagine parts of refractive index. The wind characteristics are presented in the nearest time and the same date. It is shown that the meteorological parameters of the atmosphere and time of day affect the dynamics of changes “pollution cap” over the city.