Research Progress on the Change Trend and Pollution Characteristics of Ambient Air Quality

In order to understand the change trend of ambient air quality, as well as the pollution characteristics of the main pollutants in the ambient air PM2.5, PM10, CO, etc., the weekend effect and the Spring Festival and National Day holiday pollution characteristics, this paper summarizes and summarizes the relevant environmental pollution related research, so as to provide scientific reference for effective prevention and control of air pollution.