The air quality in Delhi remained beyond the "severe" level for the third day. Officials have issued a warning that the dusty conditions are likely to prevail for another 3-4 days and advised people to avoid staying outdoors for long hours. <br />The air quality deteriorated because of dust storms in western India. The PM10 level (presence of particles with diameter less than 10mm) was beyond severe at 796 in Delhi-NCR and 830 in Delhi particularly, leading to hazy conditions.
