Air pollution in Beijing reached hazardous levels over the weekend as smog engulfed large parts of China despite efforts to clean up the foul air.
At noon Saturday, for example, the U.S. Embassy in Beijing reported the level of PM2.5, tiny, poisonous particles in the air, at 391 micrograms per cubic meter. The World Health Organization considers the safe level of the particulates to be 25 micrograms per cubic meter.
The city has been shrouded in gray smog since Friday, reducing visibility to a few hundred yards.
The Ministry of Environmental Protection has forecast severe pollution for the greater Beijing region, the western part of Shandong province and the northern...