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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).
In 2024, the Los Angeles-Long Beach-Riverside area ranked the 1st most ozone-polluted city, the 6th most polluted city by annual particle pollution, and the 11th most polluted city by 24-hour particle pollution. [3] Both ozone and particle pollution are dangerous to human health.
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 ...
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 ...
Here are the top 10 most polluted metropolitan areas in the United States in terms of ozone, according to the American Lung Association: Los Angeles-Long Beach. Visalia. Bakersfield.
Superfund sites are polluted locations in the United States requiring a long-term response to clean up hazardous material contaminations. Sites include landfills, mines, manufacturing facilities, processing plants where toxic waste has either been improperly managed or dumped.
The most populous city of Haryana is also one of the most polluted cities in the world, even though it has improved, having been recorded as the second most polluted city in the world in 2018 by ...
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).