Delhi AQI tops 400-mark, dips to 'severe' level
The Air Quality Index (AQI) in the national capital at 8 am was at 364 (in the 'Very Poor' category) and at 7 am the recorded AQI stood at 408 ('Severe'). Unfavorable meteorological conditions with slower wind speed and sudden spike in farm fire incidents are attributed to the dip in air quality.