The main air pollution is transfortation on land. The main paramater in transfortation activity is CO, Particulate, HC, Pb and SO x. The research use colorimetric principal and Pararosanilin method. Air ambient was taken according to atmospheric with grab method. The measurenment showed that SO 2 in residence of factory outlet and Pajajarans street of Bogor are small, about 0.0945%. T hat concentration is lowest rather than in residence of Jakarta about 10.70%. In the research has given that is on the contrary. It is becaused of by the other factor not just transfortation, but also land convertion. Keywords : Air pollution, SO2, grab, colorimetric and pararosanilin method