The air quality in Delhi-NCR continues to be in the very poor category. According to the System of Air Quality and Weather Forecasting and Research (SAFAR), the city's Air Quality Index was recorded at 384 at 11 AM on Thursday. An Air Quality Index, AQI between 201 and 300 is considered poor, 301 to 400 very poor and 401 to 500 severe.<br />''<br />''<br />''<br />