Delhi's air quality turns 'severe': Authorities

CPCB data showed the overall air quality index (AQI) of Delhi at 412, which falls in the 'severe category', while the Centre-run System of Air Quality and Weather Forecasting (SAFAR) recorded an AQI of 388, which comes under the 'very poor' category.The SAFAR also pointed out that a consistent day-night trend is observed for the past one week.

from News-Economic Times http://bit.ly/2TgE0kn