Rarideh Azimi - Assistant Prof., Department of Geography, Islamic AZAD University AHVAZ Branch
Azam Gohardoust - Master degree Geography, Islamic AZAD University AHVAZ Branch
Masoud Falahi - Master degree Geography, Islamic AZAD University AHVAZ Branch

Air quality standards within a certain period, allowable levels of pollutants in the atmosphere has the distinction And the permitted levels of pollutants that may be present in an ecological system are defined. 2TEquation is the standard index of air pollution 2TDistinct values of the parameters of the pollutants that have been converted to a number of class numbers been and will be reported to the public. Each class works on the environment is defined. In this paper we calculate the standard index of air pollution in the 86-1383 Appropriate statistical model was fitted to it .This indicator shows the number of days with poor air quality in the fields of freedom and BOZORGMEHR that point on the adverse effects of urban transportation and air quality shows. The statistical model is fitted to the index. 0T2TPollutant0T2T 0T2Tstandards0T2T 0T2Tindex,0T2T 0T2Tcalculated0T2T 0T2Tfrom the0T2T 0T2Trelationship0T2T 0T2Tand0T2T 0T2Tits value0T2T 0T2Tis0T2T 0T2Trounded0T2T 0T2Tto the0T2T 0T2Tnearest0T2T 0T2Tinteger0T2T. 0T2TTo calculate0T2T 0T2Tthe0T2T 0T2Tindex for0T2T 0T2Turban0T2T 0T2Tozone0T2T 0T2T8-hour0T2T 0T2Taverage0T2T, 0T2Tone0T2T-hour 0T2Taverage0T2T 0T2Tozone levels0T2T 0T2Tin urban0T2T, 0T2TCarbon0T2T 0T2Tmonoxide0T2T, 0T2Tsulfur dioxide0T2T, 0T2Tnitrogen dioxide0T2T, 0T2Tand particulate matter0T2T 0T2Thas0T2T 0T2Tbeen used0T2T.0T2T Pollutant0T2T 0T2Tstandards0T2T 0T2Tindex,0T2T 0T2Tcalculated0T2T 0T2Tfrom the0T2T 0T2Trelationship0T2T 0T2Tand0T2T 0T2Tits value0T2T 0T2Tis0T2T 0T2Trounded0T2T 0T2Tto the0T2T 0T2Tnearest0T2T 0T2Tinteger0T2T. 0T2TTo calculate0T2T 0T2Tthe0T2T 0T2Tindex for0T2T 0T2Turban0T2T 0T2Tozone0T2T 0T2T8-hour0T2T 0T2Taverage0T2T, 0T2Tone0T2T-hour 0T2Taverage0T2T 0T2Tozone levels0T2T 0T2Tin urban0T2T, 0T2TCarbon0T2T 0T2Tmonoxide0T2T, 0T2Tsulfur dioxide0T2T, 0T2Tnitrogen dioxide0T2T, 0T2Tand particulate matter0T2T 0T2Thas0T2T 0T2Tbeen used0T2T.

indicators of air quality standards, statistical models of air quality, pollution