3 Indian Cities Among World's Most Polluted Today, Smog Chokes Delhi

New Delhi was wrapped in a thick layer of toxic haze as air quality continued to remain in the "severe category". The Indian capital, along with Kolkata and Mumbai, is among the world's most polluted cities today, according to data by Swiss Group IQAir. New Delhi again topped the real-time list with an AQI of 483 at 7.30 am today, followed by Lahore at 371. Kolkata and Mumbai were also among the 5 worst-hit cities by air pollution with an AQI of 206 and 162 respectively. According to experts and doctors, the recommended AQI for any healthy person should be less than 50.