What makes Delhi the most polluted city in the world

There is a humble suggestion for the government, instead of planning smart cities, first let's think of making it livable. The WHO alarm that Delhi is the most polluted city, all tall claims of making it a model and a smart city look pale. It has witnessed the worst smog of the year. While the whole world was watching Bejing fighting with its alarming pollution level, came this hammer from the WHO. "Monday morning (6-8am) saw the densest fog of the season in Delhi. In November, such thick fog usually forms only after rain, when moisture levels go up. Since there has been no rain, it's likely high pollution, combined with moisture and absence of winds caused the fog," said R K Jenamani, director of Met office at IGI Airport. Delhi, meanwhile, witnessed one of its worst smog of the season, with visibility remaining less than 800 meters through Monday. PM 2.5 levels were in the 'severe' category in many parts of the city, with the most polluted spot, Anand Vihar, showing levels up to 530 mcg/cubic m between 2.30pm and 8pm.