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Air pollution can affect nearly every organ and system of the body, negatively affecting nature and humans alike. Air pollution is a particularly big problem in emerging and developing countries, where global environmental standards often cannot be met. The data in this list refers only to outdoor air quality and not indoor air quality, which ...
One of the most polluted countries in the world, Iraq has suffered significantly due to war in the past, which has also majorly contributed to pollution in the country. with other factors being ...
CO 2 emissions from the top 10 countries with the highest emissions accounted for almost two thirds of the global total. Since 2006, China has been emitting more CO 2 than any other country. [9] [10] [11] However, the main disadvantage of measuring total national emissions is that it does not take population size into account.
Bosnia Herzegovina is still the most polluted country in the region, with an annual average PM2.5 level of 27.5 µg/m3, but even that’s down by 18% from 2022.
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).
Several countries that ranked high on the most polluted list last year were not included for 2023 due to a lack of available data. They include Chad, which was the most polluted country in 2022.
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.
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 ...