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After a steady 23-year decline in US pollution levels through 2017, the American Lung Association's State of the Air 2022 report found a sharp uptick in pollution over the past five years. [ 96 ] According to the American Lung Association's State of the Air 2024 report, California retains its position of being the state with the most metro ...
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 ...
Search a location by zip code, city or state to learn more about the current air quality and forecasts on airnow.gov. AirNow is a partnership of the U.S. Environmental Protection Agency, National ...
A recent study analyzed the Air Quality Index readings across the country for one year. Washington’s air stands out. ... The five states with the worst air quality, according to the study, are ...
These monitors help ensure air quality standards are met and also provide important data for studying pollution trends. The information shows significant improvements in air quality over recent decades. From 1980 to 2019, levels of carbon monoxide, lead, and sulfur dioxide dropped by over 80%, and particulate matter also decreased substantially.
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 quality in Utah is often some of the worst in the United States. [ 1 ] [ 2 ] Poor air quality in Utah is due to the mountainous topography which can cause pollutants to build up near the surface (especially during inversions [ 2 ] ) combined with the prevalence of emissions from gasoline- and diesel-powered vehicles, especially older models.
Rankings were based on the area's worst county's average number of unhealthy air quality days. In the Milwaukee metro area, Racine County had an average of 6.7 unhealthy air quality days per year ...