Delhi's air quality 'very poor' as mercury, windspeed dip

The air quality in Delhi slipped into the "very poor" category on Wednesday. The city's 24-hour average air quality index (AQI) was 361.

Delhi's air quality slipped into the "very poor" category on Wednesday as low temperatures and slow surface winds allowed the accumulation of pollutants.

The city's 24-hour average air quality index (AQI) was 361.