In Pics| 10 Most polluted cities in the World

Here we take a look at the top 10 most polluted countries according to IQAir, a Switzerland-based climate group that is also a technology partner of the United Nations Environmental Program (UNEP).

1| New Delhi, India: AQI - 460. Credit: PTI Photo

2| Lahore, Pakistan: AQI - 328. Credit: AFP Photo

3| Chengdu, China: AQI - 176. Credit: AFP Photo

4| Mumbai, India: AQI - 169. Credit: PTI Photo

5| Karachi, Pakistan: AQI - 165. Credit: AFP Photo

6| Kolkata, India - AQI - 165. Credit: AFP Photo

7| Sofia, Bulgaria: AQI - 164. Credit: AFP Photo

8| Dhaka, Bangladesh: AQI - 160. Credit: AFP Photo

9| Belgrade, Serbia: AQI - 159. Credit: AFP Photo

10| Jakarta, Indonesia: AQI - 158. Credit: AFP Photo