India News: The air quality in Delhi improved slightly from 'severe' to 'very poor' on Saturday, with the Air Quality Index dropping from 461 to 398. However, the
Delhi Air Quality: Air Quality Index from 0 to 100 is considered as good, while from 100 to 200 it is moderate, from 200 to 300 it is poor, and from 300 to 400 it is said to be very poor and from 400 to 500 or above it is considered as severe.
The adjoining national capital region (NCR) also continued to witness bad air as Noida and Gurgaon continued to remain in the ‘very poor’ category and the AQI in both these cities stood at 356 and 364 respectively.