The occurrence of air pollution with dust particles or aerosols, the chemical composition, and the causes for the formation of dust particles was theoreticaly described. Consequences and impacts on human health, the applicable technical systems and measures that regulate this phenomenon were also described. The experimental work was performed with measurements of minute average numerical concentration of dust particles. These were later conversed into daily average mass concentrations with the help of mathematical operations and expert recommendations. Measurements of aerodynamics diameter and the number of dust particles was performed with optical method using a scattering photometer. Classical mathematical operations such as system of linear equations, interpolation, approximation and programming language »python« were utilised to calculate the movement of daily average mass concentration of dust particles (PM2.5 and PM10) through time and the the number of days that mass concentrations were exceeding the limit values set by World Health Organization. The movement of calculated daily average mass concentrations through time were graphically compared to measured daily average mass concentrations from Slovenian Environment Agency. Calculated daily average mass concentrations were mathematically and graphically analyzed in relation to filtration effectiveness of ventilation and air-condtioning systems. They were also analyzed in relation to weather variables such as temperature, humidity, wind speed and wind direction. With the help of weather variables and geographical location an analysis of potential dust release agents was carried out.