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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.
One of the most polluted rivers in Europe in the 1990s, [235] due to the canning industry and urban and agricultural residues from urban areas. Demonstrations and the construction of hundreds of wastewater treatment and collection systems led to the river becoming the Spanish river with the lowest average pollution in the span of just one decade.
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. Click on the arrows next to the table's headers to have the most polluted cities ranked first. Please note that constraints exist in this type of ...
The post The Most (and the Least) Polluted Cities in the World appeared first on Reader's Digest. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ...
China also enters the list of the most polluted cities in the world, with Kashgar, and has an urban population of around 920,000 people. 18. Gurugram, India.
Out of 228 metro areas, the Los Angeles-Long Beach area topped the list of spots with the most high ozone days. It had an annual average of about 175 high ozone days from 2020 to 2022.
A map of Superfund sites as of October 2013. Red indicates currently on final National Priority List, yellow is proposed, green is deleted (usually meaning having been cleaned up). Superfund sites are polluted locations in the United States requiring a long-term response to clean up hazardous material contaminations. Sites include landfills ...
The National Parks Conservation Association has listed the most polluted U.S. national parks. Five California national parks made the top 10 including Sequoia, Yosemite and Joshua Tree, according ...