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City PM2.5 pollution level 5 times WHO safe guideline
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LEVELS Of PM2.5 pollutants in the city yesterday were five times World Health Organization safety guidelines.
The Shanghai Environmental Monitoring Center recorded levels of PM2.5 at 130 micrograms per cubic meter at 9am. The WHO safety guideline is 25 micrograms per cubic meter.
PM2.5 is considered especially harmful as the tiny particles can get deep into the respiratory system.
The city’s Air Quality Index climbed above 150 at 5am and remained at “moderately polluted” for five hours.
Levels fell in the afternoon but were still considered “lightly polluted.”
Light morning pollution caused by PM2.5 and afternoon pollution caused by ozone are likely today, said the center.
The weekend will be overcast with afternoon thundershowers, said the Shanghai Meteorological Bureau.
Today’s temperature will be around 30 degrees Celsius, dipping to 29 degrees tomorrow.
Although cooler temperatures and frequent showers have made recent days feel autumnal, the official start of the season is still some time away, said the bureau.
Autumn is officially announced in the city when the average temperature stays below 22 degrees for five consecutive days — the first of which is considered the first day of autumn.
In Shanghai, this often occurs in early October, Wu Rui, a chief service officer at the bureau, told Shanghai Daily.
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