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US counties that are designated "nonattainment" for the Clean Air Act's NAAQS, as of September 30, 2017. The U.S. National Ambient Air Quality Standards (NAAQS, pronounced / ˈ n æ k s / naks) are limits on atmospheric concentration of six pollutants that cause smog, acid rain, and other health hazards. [1]
The Illinois Environmental Protection Agency issued an air quality alert in effect until midnight Wednesday and encouraged Chicago residents to limit their time outdoors. Detroit had the second ...
[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.
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 ...
A year after federal investigators outlined how Chicago funnels industrial polluters into Black and Latino neighborhoods, Mayor Brandon Johnson vowed Monday to overhaul zoning, planning and land ...
The highest temperature ever recorded in the Chicago city limits is an unofficial 109 °F (43 °C) on July 24, 1934, at Midway Airport. The official reading of 105 °F (41 °C) for that day was taken at the University of Chicago campus near the shoreline off Lake Michigan .
The city should set limits on emissions from certain buildings, using an approach already in place in New York, according to the report from the Urban Land Institute Chicago.
Climate data for Chicago (O'Hare Int'l Airport), 1991–2020 normals, [a] extremes 1871–present [b]Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high °F (°C)