Bangladesh is the world’s most polluted country. Air pollution shortens the average Bangladeshi’s life expectancy by 6.9 years, relative to what it would be if the World Health Organization (WHO) guideline of 5 μg/m³ was met. Some areas of Bangladesh fare much worse than average, with air poll ... ution shortening lives by nearly 9 years in Dhaka, the country’s most polluted city. more

Virtually all (99.9 percent) of Southeast Asia’s 656.1 million people live in areas where particulate pollution exceeds the World Health Organization (WHO) guideline of 5 μg/m³. Despite the lockdowns of the pandemic, pollution continued to rise in much of Southeast Asia in 2020. This pollution c ... uts short the life expectancy of the average Southeast Asian person by 1.5 years, relative to what it would be if the WHO guideline was met. That’s a total of 959.8 million person-years lost to pollution in the eleven countries that make up this region. Some countries in the region experience greater impacts from pollution. more

Pakistan is the world’s fourth most polluted country. Air pollution shortens the average Pakistani’s life expectancy by 3.8 years, relative to what it would be if the World Health Organization (WHO) guideline of 5 μg/m3 was met.1 Some areas of Pakistan fare much worse than average, with air pol ... lution shortening lives by almost 7 years in the country’s most polluted regions, like Lahore and Peshawar. more

In Central and West Africa, regions together comprising 27 countries and 605 million people, the average person is exposed to particulate pollution levels that are more than 4 times the World Health Organization’s (WHO) guideline of 5 μg/m³1. If these particulate pollution levels persist, averag ... e life expectancy in the regions would be 1.6 years lower, and a total of 971 million person-years would be lost, relative to if air quality met the WHO guideline. The Democratic Republic of the Congo, Rwanda and Burundi, are the top three most polluted countries in the region. more

Nepal is the world’s third most polluted country. Air pollution shortens average Nepalese life expectancy by 4.1 years, relative to what it would be if the World Health Organization (WHO) guideline of 5 μg/m3 was met.1 The highest concentrations of air pollution are observed in Nepal’s southwes ... tern districts, which share their borders with the highly-polluted Indo-Gangetic Plain of India. Here, residents stand to lose nearly 7 years of life expectancy. more

During the first year of the Covid-19 pandemic, the world’s economy slowed. Yet, the global annual average particulate pollution (PM2.5) was largely unchanged from 2019 levels. At the same time, growing evidence shows air pollution—even when experienced at very low levels—hurts human health. T ... his recently led the World Health Organization (WHO) to revise its guideline for what it considers a safe level of exposure of particulate pollution, bringing most of the world—97.3 percent of the global population—into the unsafe zone. The AQLI finds that particulate air pollution takes 2.2 years off global average life expectancy, or a combined 17 billion life-years, relative to a world that met the WHO guideline. This impact on life expectancy is comparable to that of smoking, more than three times that of alcohol use and unsafe water, six times that of HIV/AIDS, and 89 times that of conflict and terrorism. more

Air pollution’s impact on life expectancy in Nigeria is greater than that of HIV/AIDS and almost on par with malaria and unsafe water and sanitation, shortening the average Nigerian’s life expectancy by 1.8 years, relative to what it would be if the World Health Organization (WHO) guideline of 5 ... μg/m3 was met.1 Some areas of Nigeria fare much worse than average, with air pollution shortening lives by almost 4 years on average in parts of Taraba state in Northeastern Nigeria. more

India is the world’s second most polluted country. Air pollution shortens average Indian life expectancy by 5 years, relative to what it would be if the World Health Organization (WHO) guideline fine particulate pollution (PM2.5) of 5 μg/m3 was met. Some areas of India fare much worse than avera ... ge, with air pollution shortening lives by almost 10 years in the National Capital Territory of Delhi, the most polluted city in the world. more