Air Pollution: Health emergency declared as Delhi chokes, schools shut

A public health emergency has been declared in Delhi-NCR as the air quality remained in severe category. All schools in Delhi have been ordered to shut down for three days till the skies give up its grey colour.

A thicket blanket of grey smog had engulfed the Delhi skies soon after the city was done celebrating Diwali. Days later, on Friday, it worsened as the air quality deteriorated and the pollution level in the region entered the "severe-plus" category".