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During June 2023, due to early season wildfires in Canada, cities like New York and Washington D.C. suffered from dangerous levels of air pollution. It was the worst regional air quality in decades for the Northeast. [6]
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 ...
Hydrogen fluoride and sulfur dioxide emissions from U.S. Steel's Donora Zinc Works and its American Steel & Wire plant were frequent occurrences in Donora. What made the 1948 event more severe was a temperature inversion, a situation in which warmer air aloft traps pollution in a layer of colder air near the surface.
Northwell Health partnered with Stacker to analyze the most polluted cities in the United States, using EPA and American Lung Association data. About 2 in 5 Americans live in areas with unhealthy air.
New York City's pre-1966 air pollution was reportedly the worst of any American city. [17] Although the "persistently glaring" photochemical smog of Los Angeles was more visible, more "infamous," [18] and subject to a greater degree of public attention, [19] New York City had more total emissions and many more emissions proportional to its land ...
Sacramento has some of the worst air quality in the United States, according to the American Lung Association. Sacramento is among the top 10 most polluted cities in the nation in terms of ozone ...