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Air pollution is one of the most pressing environmental issues in Bangladesh, with the country frequently ranking among the most polluted in the world. [3] According to the World Air Quality Report, Bangladesh was the country with the worst air quality in 2020, a situation that has persisted over several years. [4]
The following list of countries by air pollution sorts the countries of the world according to their average measured concentration of particulate matter in micrograms per cubic meter (μg/m 3). The World Health Organization's recommended limit is 10 micrograms per cubic meter, although there are also various national guideline values, which ...
People in Bangladesh, the world's most polluted country, stands to lose 6.8 years of life on average per person, compared to 3.6 months in the United States, according to the study, which uses ...
Indonesia was the most polluted country in the region, with a 20% increase compared to 2022. Indonesia, Vietnam and Thailand all had cities that exceeded WHO PM2.5 guidelines by more than 10 times ...
The other major anthropogenic greenhouse gases [n 3] [10]: 147 [11]) are not included in the following list, nor are humans emissions of water vapor (H 2 O), the most important greenhouse gases, as they are negligible compared to naturally occurring quantities.
The IQAir report was based on data from more than 30,000 monitoring stations in 134 countries and regions. Chad, the world's most polluted country in 2022, was excluded from the 2023 listings ...
The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter ( PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively).
The top five most polluted countries in 2023 were: Bangladesh (79.9 µg/m 3) more than 15 times higher than the WHO PM2.5 annual guideline. Pakistan (73.7 µg/m 3) more than 14 times higher.