Abstract: “The central air oxidizer (with overlapping interactions) where contains many trace gases that could still from the air through oxidative stress, where he found that the effect of unilateral gas dioxide leads to the depletion of ozone gas as hydrocarbons and other gases do. Where it was in this paper the analysis of the behavior of the concentrations of gases Carbon Monoxide and Carbon Dioxide (CO, CO2) respectively, and the behavior of meteorological variables (Relative Humidity (RH), Temperature (T), Dew Point Temperature (TD) and Wet Bulb Temperature (TW)) every quarter of an hour of the study days 2015 for Al-Hurriya station in Baghdad city. It was to find a relationship between the meteorological variables and concentrations of gases (CO, CO2) using simple linear regression (SLR) statistical model, correlation coefficient (R, R2) and standard error, where he found that the relationship between relative humidity and concentrations of gases (CO, CO2) is inverse and found that the rel”

Keywords: Concentrations, Meteorological variables, Chemical analysis, Local determinants, Baghdad.