An AQI between 201 and 300 is considered "poor", 301-400 "very poor" and 401-500 "severe".
The smoke from stubble burning accounted for 14 per cent of Delhi pollution
on Wednesday. It is likely to dip to 7 per cent n Thursday.
Weather experts said a fresh western disturbance is expected to increase the wind speed and improve ventilation which will help bring down pollution levels.
Meanwhile, a meeting of Parliamentary panel on urban development was held on Wednesday in New Delhi to discuss ways to check air pollution
Green Tribunal on Wednesday directed all state pollution control boards to install assessed air quality monitoring stations within a year and submit quarterly progress reports to the Central Pollution Control Board (CPCB).
Officials from Municipal Corporation of Delhi (MCD), New Delhi Municipal Corporation and Central Pollution board were present in the meeting along with 23 members of Parliament.