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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 caused an additional two million premature deaths in 2019. [1]
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). [1 ...
[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. Click on the arrows next to the table's headers to have the most polluted cities ranked first.
To rank the 25 cities with the most pollution, we relied on data provided by the World Air Quality Report 2021 by IQAir. As mentioned earlier, air pollution is the most damaging form of pollution ...
Pakistan remained one of the world's three smoggiest countries in 2023, as Bangladesh and India replaced Chad and Iran, with particulate matter about 15 times the level recommended by the World ...
New York City 'worst polluted city' in the world as air quality plummets. ... New York is once again the most polluted major city in the world right now, according to live rankings by IQAir, an ...
The most commonly used air quality index in the UK is the Daily Air Quality Index recommended by the Committee on the Medical Effects of Air Pollutants (COMEAP). [39] This index has ten points, which are further grouped into four bands: low, moderate, high and very high. Each of the bands comes with advice for at-risk groups and the general ...
Most places in the world have pollution above the acceptable standard. Here’s how each region fares. Air Quality Is Bad Pretty Much Everywhere, New World Pollution Report Finds