NEW DELHI: Air quality in the national capital was recorded in the 'very poor' category on Sunday with the 24-hour Air Quality Index settling at 314, according to Central Pollution Control Board data.
An AQI between zero and 50 is considered 'good', 51 and 100 'satisfactory', 101 and 200 'moderate', 201 and 300 'poor', 301 and 400 'very poor', and 401 and 500 'severe'.
