Abstarct: Dust phenomenon is one of the most important environmental problems in different parts of the world, especially in arid and semi-arid regions. Dusting phenomena, in addition to the sharp decline in air quality, degradation of vegetation and soil, resulting in increased desertification and drought. The intensification of this phenomenon in recent years is one of the problems that the Middle East countries are facing. Due to fusion with desert areas of neighboring countries such as Iraq, Saudi Arabia and Syria in the western province of Iran, including Khuzestan and Ilam, in the past few years, they have been exposed to extreme dust storms. In this study, using the Middle East Dust Index (MEDI) algorithm, some of the dust storms affecting southwest of Iran have been identified. For this purpose, MODIS images were first taken on dusty days and the necessary modeling and calculations were carried out in ENVI software environment. The results of this study showed that many of the storms formed in southwestern Iran are caused by winds of the north wind. Dust centers of eastern Syria, northwest, center and south of Iraq and west of Khuzestan province are affected by wind blowing, which leads to lower air quality in western provinces of Iran, especially Khuzestan and Ilam.