The air quality in the national capital region continues to be in the severe category. According to Central Pollution Control Board, the air quality index, AQI was recorded 457 this morning.
An AQI between Zero to 50 is considered 'good', 201 to 300 'poor', 301 to 400 'very poor' and 401 to 500 'severe'. Above 500 falls in the 'severe plus' category. With the onset of winter, a dip in the minimum temperature is
making the air cold and heavy leading to accumulation of pollutants close to the ground.
After Diwali, a pungent smog lingered over Delhi-NCR as a result of emissions from firecrackers, stubble burning and unfavourable weather. The Odd-Even rule has been enforced in Delhi to combat air pollution. It was suspended yesterday and on Sunday due to Gurpurab.