Presented data on continuous testing of atmospheric aerosols and precipitations (snow, rain) chemical composition at Irkutsk monitoring station being a part of South-Eastern Asia atmospheric precipitations monitoring network (EANET) for the period of 2000-2012. The last 5 years were indicative of the salinity ration increase of the atmospheric precipitations especially during winter season. There is an increase of gas admixtures in the air environment of the city on the background of low total ion-to-aerosols ratio. On top of that, PAC surveys are indicative of increase and accumulation of pollutants in the air environment of the city during winter season.