Delhi Air Quality: Supreme Court says GRAP IV should remain in force even if AQI improves

The Supreme Court on Monday said that in order to combat the deteriorating air quality level in Delhi, it is contemplating passing an order to ensure that the Graded Response Action Plan IV (GRAP IV) is in force even if the air quality index (AQI) improves and goes below 300. [In Re: Commission for Air Quality Management]