Statement:
Iran is less polluted than Kazakhstan

In the Most Polluted Countries rating Iran holds position #24 2021 out of 112 and Kazakhstan is #23 out of 112 2021.
Position of Iran is better than position of Kazakhstan.

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
    Kazakhstan 'Pollution Index' value is 31.1