7 most polluted countries across globe

In light of the growing concern over pollution in today's world

Let us look at the most polluted nations worldwide.

1. Bangladesh

With an average PM2.5 concentration of 77.10

2. Pakistan

With an average PM2.5 concentration of 59.00

3. India

With an average PM2.5 concentration of 51.90

4. Mongolia

With an average PM2.5 concentration of 46.60

5. Afghanistan

With an average PM2.5 concentration of 46.50

6. Egypt

7. Tajikistan