Delhi's AQI surged from 117 on Saturday to 261 on Sunday. By Monday’s 4 PM bulletin, the index hit 324—crossing the 300-mark threshold for “very poor” air for the first time this season

QUOTE · 引述
Delhi's AQI surged from 117 on Saturday to 261 on Sunday. By Monday’s 4 PM bulletin, the index hit 324—crossing the 300-