国际在线报道（记者 黎萌）：进入十月，北京地区的雾霾明显加重，这也是秋冬季北京空气质量的常态。18日，北京市环保局公布的数据显示，前三季度，北京PM2.5平均浓度为62微克/立方米，同比下降10.1...
International Online Reporting (Reporter Li Meng): In October, the haze in Beijing has increased significantly, which is also the normal air quality in autumn and winter in Beijing. The average concentration of PM2.5 in Beijing in the first three quarters was 62 micrograms per cubic meter, down 10.1 percent from the same period last year, according to data released by the Beijing Environmental Protection Bureau on the 18th.
