Air quality deteriorated further but remained in the 'severe' category in Delhi and surrounding cities on Saturday, with the pollution level hovering at 447. The air quality in Delhi and the surrounding regions have has remained in the severe category despite the wind activity which had picked up on Saturday evening.
 

Air quality deteriorated further but remained in the 'severe' category in Delhi and surrounding cities on Saturday, with the pollution level hovering at 447. The air quality in Delhi and the surrounding regions have has remained in the severe category despite the wind activity which had picked up on Saturday evening.