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Shanghai Air Worsens as Beijing Sees ‘Long-Lost’ Blue Skies

Air quality in Shanghai, China’s financial center, deteriorated as Beijing residents saw a return of “long-lost” blue skies following 20 days of hazardous pollution last month.

The concentration of PM2.5, fine air particulates that pose the greatest human health risk, rose to 120.7 micrograms per cubic meter at 4 p.m. in Shanghai from an average of 66 in the past 24 hours, the city’s environmental monitoring center said. Levels near Beijing’s Tiananmen Square fell to 21 from an average of 63, according to the capital’s monitoring center.