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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.
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 5 micrograms per cubic meter, although there are also various national guideline values, which are ...
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 ...
Here are key regional takeaways from IQAir’s 2023 World Air Quality Report. Asia is the world’s most polluted region. All but one of the 100 cities with the most polluted air in the world are ...
But which cities have the world's worst air? To compile such a list, 24/7 Wall St. has reviewed several dozen studies on air quality conducted over the past few years, along with data from ...
The Oklahoma City metro area has risen to one of the worst cities in the country for air pollution, reports the American Lung Association. The 2024 State of the Air report ranked Oklahoma City as ...
Pages in category "Air pollution by country" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. G.
The report is based on information from more than 30,000 air quality monitors in 134 countries and territories, according to IQAir. The company analyzed the average level of pollution throughout ...