Coal is an essential component of the energy production; it was necessary to review the environmental standards and requirements to include all activities related to the use of coal or petroleum coke. Cement plants considers the largest stations producing pollutants known globally as very dangerous emissions as (CO, PM10, SOx, NOx). Especially in the area Helwan, in which a group of different industries are concentrated. So that, it was necessary to assess environmental pollution loads. The main objective of this study is to use mathematical models (Breeze AERMOD) Dispersion Modeling software to assess the environmental level resulting from using the coal as alternative fuel instead of natural gas and assess the environmental impact for this transformation. By studying the general location of Helwan area and identifying sensitive receptors and identify the level of pollution generated cement industry. Keywords: AERMOD; Cement industry; Emissions, Helwan Pollution, Dispersion Modelling