Beijing air pollution tops hazardous levels days before Congress
View of the Tiananmen Square in heavy smog in Beijing, China, 28 February 2013. Beijing warned residents to stay indoors as air pollution exceeded hazardous levels five days before Chinas national legislature begins its annual meeting, with thousands of delegates expected in the capital. Concentrations of PM2.5, fine air particles that pose the greatest health risk, rose to 469 micrograms per cubic meter at 10 a.m., near Tiananmen Square compared to an average of 275 in the past 24 hours, the Beijing government reported. The World Health Organization recommends 24-hour exposure to PM2.5 of no higher than 25. The level dropped to 163 at 12 p.m. The country opens its annual National Peoples Congress on March 5 to set this years growth target and discuss policies.
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