Lahore: Motorists make their way along a street amid heavy fog on Thursday.—AFP LAHORE: Despite the rain visibly clearing Lahore’s air, smog levels in high density traffic areas continued to be unhealthy. At the crowded Shimla Pahari area on Thursday, for example, an Air Quality Index of 205 was recorded while on Wednesday it was 175. Provincial Disaster Management Authority’s director operations Nisar Ahmed Sani told Dawn that there were three major contributors to the bad air quality: vehicular emission which was around 43 per cent; emission from kilns around 25pc and stubble burning and open burning along with other miscellaneous acts contributing to around 25pc.