Today, air pollution is a big problem from health and environmental point of view. So, the attention to air pollution control is increasing as the knowledge about the emission sources are increasing. Air pollution dispersion modeling can be used as a controlling procedure. Besides, potential health and environmental impacts of highly industrialized areas like Assaluyeh are great concerns to locals, managers, and policy-makers. In this study, NOx and SO 2 emissions from stacks and flares located in phases 9 and 10 of South Pars Gas Field were modeled using AERMOD View TM. The modeling process was performed in an area about 410 km 2 for to both normal and emergency operations. AERMOD View TM was used to estimate the maximum potential concentration of these pollutants over 1-h, 3-h, 8-h, 24-h, month and annual averaging periods. Then, the predicted concentrations were compared with Air Quality Standards. The results showed that Predicted maximum concentrations were exceeded all the SO 2 threshold limits and predicted maximum NOx concentrations did not exceed annual standards in Normal operation. In Emergency operation, predicted maximum concentrations of both pollutants exceeded the standards. Also, by observing the location of the sensitive ecosystems, like mangroves and coral reefs, it is indicated that these ecosystems are exposed to the least predicted concentration. However, many studies showed that even in exposure by lower concentration, higher impacts are expected in long-term period. Keywords: Air pollution modeling, SO 2 , NOx, AERMOD, Air quality standards, South Pars Gas Field.
