1. Bangladesh Bangladesh is the most polluted country in the world with an average PM2.5 concentration of 97.1. The country’s main environmental pollutants are air and water pollution, noise pollution, and solid wastes.
2. Pakistan The second-most polluted country in the world is Pakistan, which has an average PM2.5 concentration of 74.27. AQI levels in Punjab were consistently between the “near unhealthy” or “very unhealthy” ratings for most of 2019 and even reached as high as 484.
3. India India the third-most polluted country in the world with an average PM2.5 concentration of 72.54. Of the 30 most polluted cities in the world, 21 of them are located in India. The most polluted city in India and the world is Kanpur.
4. Afghanistan Afghanistan is the fourth-most polluted country in the world with an average PM2.5 level of 61.80. In 2017, numbers show that air pollution was more dangerous than war in Afghanistan. That year, about 26,000 people lost their lives due to air pollution.
5. Bahrain The fifth-most polluted country is Bahrain, which has an average PM2.5 of 59.80. Bahrain has the worst air pollution in the Middle East. A Gulf country like Bahrain may not suffer from pollution caused by coal power plants or other human activity seen in cities.
6. Mongolia Mongolia is the sixth-most polluted country in the world. Mongolia’s average PM2.5 concentration is 58.50. The largest source of pollution in Mongolia is the burning of coal and other biomass, such as wood or crop residue, in stoves.
7. Kuwait Kuwait is the seventh-most polluted country with an average PM2.5 level of 56.00. Kuwait’s oil industry poses the largest threat to the country’s air quality as the source of significant amounts of pollution from burning fossil fuels while drilling.
8. Nepal The eighth-most polluted country in the world is Nepal. Nepal’s average PM2.5 concentration is 54.15. About 35,000 people Nepal die every year from illnesses caused by air pollution. About 1 in 10 Nepalese now suffer from a chronic lung problem such as bronchitis.
9. United Arab Emirates The United Arab Emirates is the ninth-most polluted country with an average PM2.5 concentration of 49.93. In the UAE, high pollution is caused by rapid population growth, the high demand for energy, and exploitation of the country’s natural resources.
10.Nigeria Nigeria is the tenth-most polluted country in the world. Nigeria produces over 3 million tons of waste every year, with uncontrolled waste burning being one of the largest contributors to poor air quality.Indoor air pollution is also a large problem in Nigeria as well.