Atmospheric stability is an important parameter which effects pollutant dispersion in the atmospheric boundary layer. The objective of this paper was to verify the effect of stability conditions on odor dispersion downwind from an area source using computational fluid dynamic (CFD) modeling. The FLUENT Realizable k-ε model was used to simulate odor dispersion as released by an odor source. A total of 3 simulations demonstrated the effects of unstable, neutral, and stable atmospheric conditions. Unstable atmospheric stability conditions produced a shorter odor plume length compared with neutral and stable conditions because of stronger convective effects. Like other studies, unstable atmospheric condition produced higher plume height compared with neutral and stable conditions. Keywords : FLUENT, Atmospheric stability, Flow field, Odor dispersion