GRAP for the National Capital Region (NCR) is classified under four different stages of adverse air quality in Delhi: Stage I ...
The city's 24-hour Air Quality Index (AQI), recorded at 4 pm every day, stood at 424, up from 418 the previous day. Out of ...
A day after Delhi's air quality plunged to the 'severe' category, Environment Minister Gopal Rai on Thursday said strict ...