Delhi has been witnessing a trend of poor air quality for the fast few days. The air pollution level in Delhi had hit an eight-month high on Thursday but reduced slightly on Friday with favourable wind speed helping in dispersion of pollutants, even as the contribution of stubble burning to Delhi's PM2.5 concentration rose to 18%.
Air Quality Index (AQI) is at 294 in ITO, 256 in RK Puram, 286 in Anand Vihar, all three in 'poor' category, according to Delhi Pollution Control Committee (DPCC) data. AQI stands at 325 in DTU and 381 in Wazirpur, in the 'very poor' category.
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.