Canarina DISPER is an air modeling software for air pollution dispersion analysis. The program calculates the pollutant concentration in each point of the air considering each one of the pollutant sources and the conditions of the atmosphere. The system of simulation of processes of dispersion that DISPER has, offers to the beginner and the expert programmer, a quick and practical system to evaluate the dispersion of pollutants in the air. We can say, with a certain security that the software DISPER is one of the best tools, to carry out numeric simulations of air pollution processes. DISPER is an AERMOD and CalPuff –like software. It calculates air pollutant distribution using an atmospheric dispersion model and atmospheric modeling. It is interesting for air modeling, air quality modeling, air pollution modeling, emissions modeling and digital terrain modeling.