A dataset of meteorology, PM2.5 concentration and gaseous pollutants in Xi 'an City from 2019 to 2020

ML9841 nitrogen oxides (NO-NO2-NOx) analyzer, ML9850 sulfur dioxide (SO2) analyzer, ML9811 ozone (O3) analyzer and ML9830 (CO) analyzer produced by ECOTECH (Australia) were used to obtain the 5-minute concentration of atmospheric nitrogen oxides, sulfur dioxide, ozone, carbon monoxide and gaseous pollutants from January 2019 to December 2020 at the urban observation site of National Observation and Research Station of Regional Ecological Environment Change and Comprehensive Management in the Guanzhong Plain. Simultaneous minutely temperature, humidity, air pressure, solar radiation, wind speed and wind direction around the station were observed by MAWS201 small automatic weather station of Vaisala, Finland. This dataset can provide basic data records for atmospheric changes in densely populated areas, and also provide data support for further pollution evaluation, control and treatment.