Eight areas in Delhi are among the top 10 most polluted in the country, data from Central Pollution Control Board has revealed. TheShadi pur area has the worst air quality with PM2.5 at 415 that falls in the "severe" category. In Mundka, Bhiwadi, Gurgaon, Wazirpur, Anand Vihar, Okhla, Dwarka, Bawana, Delhi Mathura road areas, the air quality falls under "Very Poor" category. This is an alarming trend and a look at the pollution data from the last three years show that in October, just weeks before Diwali, there has been no change in the pollution levels. In Mumbai, the pollution has been worse than the last two years.