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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).
The metro area was No. 4 on the list of the places with the worst ozone pollution with an annual average 52.2 days of high ozone days. ... What are the top 10 worst cities for particle pollution?
The American Lung Association’s State of the Air report for 2024 ranked U.S. cities and graded counties based on ozone and particle pollution during 2020, 2021 and 2022, according to its website.
The state of air pollution has been improving in Los Angeles, although it remains the city with the worst ozone pollution. [12] With a population of roughly over 10 million, the Los Angeles area is a large basin with the Pacific Ocean to the west, and several mountain ranges with 11,000-foot peaks (3,400 m) to the east and south, Los Angeles is ...
The Milwaukee metro area ranked 26th worst in the nation for ozone pollution, according to the report. Rankings were based on the area's worst county's average number of unhealthy air quality days.
Both ozone and particle pollution are dangerous to human health. The Environmental Protection Agency (EPA) engaged a panel of expert scientists, the Clean Air Scientific Advisory Committee, to help them assess the evidence. The EPA released their most recent review of the current research on health threat of ozone and particle pollution. [63]
The Oklahoma City metro area has been ranked as one of the worst cities in the country for air pollution, reports the American Lung Association.
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 ...