Reuters: Beijing is to raise the thresholds for issuing its highest air pollution warnings, the state news agency Xinhua reported on Sunday, two months after acrid smog triggered the citys first ever red alert.
In future, the highest alert will be issued only 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 Beijings environmental protection bureau.
At present, a red alert is issued when the...