Beijing to raise threshold for pollution ‘red alerts’
Beijing will raise the threshold for issuing its highest air pollution warnings, the state news agency Xinhua reported, two months after smog triggered the city’s first ever “red alerts”.
In future, the highest alert will only be issued when the daily average air quality index (AQI) is forecast to exceed 500 for a day, 300 for two days in a row or 200 for four days, Xinhua reported, citing Beijing’s environmental protection bureau. Now a red alert is issued when the AQI is forecast to exceed 200 for at least three days.
Schools were closed and outdoor construction work was suspended when thick smog prompted Beijing to issued its first red alert last December.
China’s capital also will almost double the number of air monitoring stations to give a better idea about the true state of the city’s air quality, Xinhua said.