北京pm2.5密度较之前降低
New figures show the average density of PM2.5 in Beijing from January to July this year stands at 55 micrograms per cubic meter, down 14.1 percent from the same period last year, report local authorities.
最新数据显示，2018年一月至七月北京PM2.5平均密度为55毫克每立方米，比去年同期低14.1%。
Data released by the Beijing Municipal Environmental Protection Bureau shows the density of PM2.5 in July came in at 50 micrograms per cubic meter, down by 3.8 percent compared to the same month last year.
Also, from January to July, the average density of larger particles, PM10, is down by 9.6 percent. Sulfur dioxide levels are down 30 percent, while nitrogen dioxide is down 13 percent compared with the same time frame last year.
As part of pollution control and emission reduction programs, 548 manufacturing companies have been eliminated from Beijing as of the end of July this year. Beijing authorities have also removed 31,000 diesel trucks from the roads.