Dec. 24 (Bloomberg) -- Shanghai warned children and the elderly to avoid prolonged or heavy outdoor activities on “light pollution” levels today.
The air quality index was 105 as of 7 a.m., placing it in the fourth poorest of six levels, according to the website of the city’s environmental monitoring center. The level of PM2.5 pollutants was 128.4 micrograms per cubic meter, more than five times the World Health Organization recommended level for daily exposure. The particles, which are smaller than 2.5 microns in diameter, are more dangerous than other particulate matter, according to WHO.
Shanghai saw record levels of smog earlier this month, forcing flight cancellations and prompting the government to issue warnings to keep children indoors and order vehicles off the road. The pollution index surged to a record 482 on Dec. 6, reaching the highest “severe” level, according to the China Daily.