<p>The present study aims to model the Particulate Matter dispersion and assess the level of exposure and health risk of users in a large-scale sports complex in the center of Tehran. Six stations were selected for measurement utilizing a portable device. Then, the interpolation method with the Kriging technique was applied in the ArcGIS software environment for dispersion modeling. For health risk assessment, the EPA presentation method was employed in sections of carcinogenic and non-carcinogenic risks for children and adults. In the next step, confronting the exposure groups with PM10 from all of the three routes of ingestion, inhalation, and dermal absorption was considered. The results revealed that the current situation is higher than the global standard given that the average annual concentration of PM10 was 81.77&#xa0;µg/m³. The average maximum daily concentration of PM10 during autumn–winter was higher than that during spring–summer. In addition, the average hourly, eight-hour, daily, and annual PM10 concentrations were 82.39, 73.42, 85.39, and 69.5&#xa0;µg/m3, respectively, indicating that the simulated maximum 24-h concentrations during both time periods are within the NAAQS standard, yet higher than the WHO standard limit. Further, the simulated maximum annual concentration is higher than the limit of both standards. The results indicated that the PM10 dispersion in the study site is not uniform. PM10 absorption values represented that the highest exposure in both groups was from ingestion, followed by respiratory and dermal absorption, respectively. The PM10 dispersion in the study site does not pose any carcinogenic or non-carcinogenic risk to the target groups due to the small non-carcinogenic cumulative risk index.</p>