Statement:
Sri Lanka is less polluted than Iran

In the Most Polluted Countries rating Sri Lanka holds position #53 2021 out of 112 and Iran is #24 out of 112 2021.
Position of Sri Lanka is better than position of Iran.

Referencies:

  1. Most Polluted Countries 2021 by IQAir
    The countries in the rating sorted by 'Pollution Index' in descending order.
    Iran 'Pollution Index' value is 30.3
    Sri Lanka 'Pollution Index' value is 17.4