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Beijing Recommends Young, Old Stay Indoors as Smog Covers City

Beijing recommended children, the elderly and those with illnesses stay indoors today because of rising pollution levels as smog covered the Chinese capital.

The concentration of PM2.5, the fine air particulates that pose the greatest health risk, was 321 micrograms per cubic meter at 8 a.m. near Tiananmen Square and had averaged 299 micrograms in the past 24 hours, according to the Beijing Municipal Environmental Monitoring Center’s website. The World Health Organization recommends 24-hour exposure to PM2.5 of no higher than 25.