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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). [1 ...
Air pollution has been a consistent and ongoing nuisance in Phoenix — along with five other cities in Arizona, it’s tied for the worst air quality in the nation. According to research group ...
Fresno has some of the worst air quality in the United States, according to the American Lung Association. The Central Valley is one of the top 10 most polluted cities in the United States ...
People living in the Midwest and Northeast were warned of a worsening air quality index throughout the week due to smoke from the Canadian wildfires
Air pollution can affect nearly every organ and system of the body, negatively affecting nature and humans alike. 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 ...
The odd red colour is something that has been noticed for a few days now in some parts as air quality continues to worsen. New Jersey looks like the blood moon is rising once again today ...
Cities that have experienced massive droughts and wildfires in recent years have among the worst air quality. So far this year, there have been more than 20,000 wildfires, spanning 2.3 million ...
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 ...