Delhi Pollution Hits Severe Mark, Centre Holds Off Stricter Curbs

Delhi's average air quality index (AQI) breached 400-mark on Wednesday, according to the Central Pollution Control Board (CPCB).

The air quality index from 0 to 100 is considered 'good', 100 to 200 'moderate', 200 to 300 'poor', 300 to 400 'very poor' and from 400 to 500 or above 'severe'.

With the very poor air quality, the Centre on Wednesday decided to watch the situation for a day or more before invoking stricter curbs under Stage 3 of the Centre's air pollution control plan called the Graded Response Action Plan (GRAP) in Delhi-NCR, as forecasts suggested that the situation may improve.