5 Most Air Polluted Countries in Asia

3. India

Annual Average PM2.5 Concentration (2023): 54.4 μg/m³

India is one of the most air polluted countries in Asia. As of 2023, the country has an annual average PM2.5 concentration of 54.4 μg/m³. Begusarai is the most air polluted city in India, as of 2023.