More stringent emission norms are being put in place to curb environmental impact of pollution. Financial penalty in form of carbon currency is being proposed. While there have been major improvements in automobile and aviation industry in reducing pollution, quantification of its local dispersion and impact on environment locally has not been reported adequately. This study simulates a jet exhaust under partial load conditions and quantifies the spread over a relatively large domain (100 m). Particulate matter is injected with the jet as per known levels generated in a jet engine and its impact on the jet spread is shown. PM10 and PM2.5 sizes are simulated. Simulations are performed using OpenFOAM. In OpenFOAM two solvers are used – ‘simpleFoam’ and ‘twoPhaseEulerFoam’. PM2.5 is found to disperse more than PM10. Both particulates induce unsteadiness in the jet and suppress the jet closer to ground.