Pollutants emitted into the atmosphere is again deposited on the ground as wet or dry deposition. Dry depositions are astimated by modeling. In this paper is estimated dry depositions of gases NOx and ions NH4 +, NO3 -, SO4 -2, Na+, Mg+2 i Ca+2 in January and i July 2013th Iin Bijeljina, and then is calculated potential of acidification by dry deposition of acid gases and ions (PAI(dry)).