Delhi Air Most Polluted, Shows Data; Quality Dropped On Diwali Morning

Delhi is the most polluted city in the world right now, according to an air quality index, or AQI, measured by Switzerland's IQAir. Pakistan's Lahore comes next. The World AQI website shows India in the second spot after Qatar as having the most polluted cities. This index also includes Delhi. Delhi Chief Minister Arvind Kejriwal, however, tweeted that Delhi is not in the list of 10 most polluted cities in Asia, which includes eight from India.