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This list contains the top 500 cities by PM2.5 annual mean concentration measurement as documented by the World Health Organization covering the period from 2010 to 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.
Western cities top the list of most polluted. Globally, more than 6.5 million people die each year due to air pollution. Exposure to polluted air can inflame cells and increase the risk of chronic ...
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.
Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.
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Below is a list of 526 cities sorted by their annual mean concentration of PM2.5 (μg/m 3) in 2022. [1] [2] By default the least polluted cities which have fewest particulates in the air come first.
In this article we take a look at the 30 most polluted cities in the United States. Click to skip ahead and jump to the 10 most polluted cities in the U.S. When comparing cities or regions on ...
Six California spots are among the top 10 most polluted metropolitan areas in the United States, according to the American Lung Association’s 2024 State of the Air report.. Each year, the ...