Air pollution in many cities is influenced by wind speed and direction, which in turn are affected by urban morphology. Air quality is closely related to urban fabric, which refers to the physical layout and design of urban areas. Factors such as building density, green spaces, transportation infrastructure, land use, and the shape and size of buildings significantly influence air quality. These features affect the concentration of pollutants in the environment by shaping wind flow and local dispersion patterns. This study examines how the height of buildings influences air pollution. In recent years, the strong tendency towards the construction of tall buildings has had adverse effects on cities. The rise in tall buildings, along with their impact on wind flows and the spread of pollutants, presents a significant challenge for urban planners. Today, the risks of air pollution are increasing, and therefore methods of monitoring how pollutants are released are of particular importance. This study evaluates the impact of tall buildings on pollutant dispersion and aims to provide a program tailored to the data obtained to control and improve the current situation. This research was conducted on two groups of buildings in the southwestern part of Tehran (District 18) using computational fluid dynamics (CFD) simulation and geographic information systems (GIS). The results of the study show that as the wind speed in a path increases, the concentration of pollutants decreases. Additionally, increasing the height of a building in a single state increases the wind speed on two sides and decreases the wind speed on the other two sides. In general, based on the assumption
