Аннотация:According to continuous 11 years-long measurements (2002–2012) at the joint ecological station of the A.M. Obukhov IAP RAS and the MSU Faculty of Geography data on the upper and lower limits of the surface concentrations of minor atmospheric gases (ozone, nitrogen oxide and dioxide, carbon monoxide and sulfur dioxide) are provided. It is shown that around the MSU, in the southwestern part of Moscow, far from production enterprises and large highways, maximum allowable concentrations are very rarely exceeded: such cases account for about 0,1% for O3, NO and CO; 0,01% for NO2 and 0,001% for SO2. The highest average 10 min concentrations were 150 ppb for ozone; 996 and 226 ppb for NO and NO2 respectively; 16 ppm for CO; and 276 ppb for SO2. Anomalously high air pollution is usually characteristic of longlasting anti-cyclonic conditions. The highest concentrations of O3, NO2 and CO were recorded in 2010 and 2002 summers during a smoky haze in extraordinary hot weather; while on the contrary, those of SO2 occurred during the deep freeze in 2006 winter. The data of «ECHO-1» and «MODOS» sodars allowed correlating the record-breaking high levels of air pollution with both temperature stratification and wind regime of the lower atmosphere. For the first time regularities of diurnal and annual variations of extremely low (near-zero) surface concentrations of O3, NO and SO2 are revealed according to the long-term data.