Shanghai Warns Children to Stay Indoors on Haze, PM2.5 Surge
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Shanghai warned children and the elderly to stay indoors as smog enveloped China’s commercial hub, sending levels of the worst pollutants surging to more than 15 times World Health Organization guidelines.
The level of PM2.5 pollutants reached 395.7 micrograms per cubic meter at 3 p.m., the city’s environmental monitoring center said. The WHO recommends exposure of no more than 25 over a 24-hour period for particles smaller than 2.5 microns in diameter that are more dangerous than other particulate matter.