The whole year SO2, NO2, PMl0 concentration and meteorological parameters from Zhabei District Automatic At- mosphere Monitoring Station in 2009 were summarized and analyzed. The temporal variation of PM,o indicated that the mass con- eentration was higher in winter and spring and lower in summer and fall. PMI0 mass negatively correlated to precipitation, relative humidity, temperature. But the correlation of PMt0 mass to wind speed varied seasonally and the positive correlation of PMIo mass to atmospheric pressure was observed. The characteristics of SO2, NO2, PMlo and meteorological factors in typical and hazy days were summarized and compared.