China and the United States have different air quality standards

On December 1, the air quality in Beijing reached mild pollution. Some members of the public asked, “The monitoring data released by the U.S. Embassy shows that today is a highly dangerous weather and the pollution is heavy. However, the data released by the Beijing environmental protection department is light pollution. Why is the difference so great?” the expert explained that the U.S. embassy PM2.5 (fine particles in air, less than 2.5 microns in diameter) was monitored and used in U.S. standards. (The "Beijing News" on December 2)

If American standards do not reflect the air quality of Beijing, it is obviously not convincing. The standard is the United States. It is measuring the air in Beijing. The so-called American standards do not reflect the theory of air quality in Beijing.

This can only show that it is not citizens who feel that air pollution is serious, but that the current national standard is too “understatement”. Obviously, if the number of suspended particles with a diameter of less than 2.5 microns is not monitored and published, the air pollution level will obviously be greatly reduced, and “heavy pollution” may become “mild pollution”, and the good weather will be many and numerous each year. There will be less and less bad weather. Or it may become a political achievement in managing environmental air pollution.

When will our air quality standards meet international standards?