Delhi s air quality remains very poor ANI | Updated: Feb 21, 2021 10:25 IST
New Delhi [India], February 21 (ANI): Air quality in the national capital remained in the very poor category on Sunday with shallow fog observed in isolated pockets over Delhi.
The overall air quality index (AQI) stands at 303, as per the System of Air Quality and Weather Forecasting And Research (SAFAR).
As per the SAFAR, the concentration of PM10 particles stood at 261 in the poor category while PM 2.5 at 124 in the very poor category today.
An AQI between 0-50 is marked good, 51-100 is satisfactory, 101- 200 is moderate, 201- 300 is poor, 301-400 is very poor and 401-500 is considered severe.