A heavy smog shrouded northeast China’s Harbin city on Monday for the second straight day, forcing the closure of schools and highways, Xinhua news agency reported. The density of PM 2.5 — airborne particles measuring less than 2.5 microns in diameter, exceeded 500 micrograms per cubic meter on Monday morning, causing visibility of less than 50 meters, in downtown Harbin, the capital of Heilongjiang province, it said. Meteorological authorities issued a red alert for the heavy smog in several cities in the province at 9 a.m. Monday, forecasting the smog will continue in the next 24 hours. The Taiping International Airport in Harbin was also closed. Meanwhile, education authorities have issued a notice for suspension of classes for all primary and middle schools in the city.
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