Days ahead of Diwali, the air quality in the national capital remained in the 'poor' category on Saturday with an overall Air Quality Index (AQI) at 262, as per the System of Air Quality and Weather Forecasting And Research (SAFAR). On Friday, Delhi's AQI was in the poor category.
The levels of PM 2.5 and PM 10 were recorded at 109 in the 'very poor' and 228 in the 'moderate' category respectively.vAn 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.
The air quality in Noida was recorded as 'very poor' with AQI 306 while in Gurugram it is in the 'moderate' category with AQI at 156.
