As per the World Air Quality Report released by IQAir, India's air pollution worsened in 2021m reported NDTV. The NDTV reports says that Delhi is the world's most polluted capital for the fourth consecutive year. Meanwhile, the world's most polluted place is Rajasthan's Bhiwadi, followed by Uttar Pradesh's Ghaziabad on Delhi's eastern border, reported NDTV. The list of 100 most polluted places include 63 cities from India. Watch the video to know more.