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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 ...
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.
Air pollution measurement is the process of collecting and measuring the components of air pollution, notably gases and particulates. The earliest devices used to measure pollution include rain gauges (in studies of acid rain ), Ringelmann charts for measuring smoke , and simple soot and dust collectors known as deposit gauges . [ 1 ]
Canadian wildfires are once again taking a toll on the continental U.S., this time in the Midwest, where air quality alerts have been issued across the region. Chicago's air quality ranks among ...
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 Chicago Department of Public Health was established in a 1876 reorganization of the city's health apparatus. [1]In 1975, the Chicago City Council revised the city's municipal code to make it clear that the nine-member Chicago Board of Health was the policy-making body for health and the Chicago Department of Health is the agency which administers the city's health programs and enforces ...
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Air pollution can occur naturally or be caused by human activities. [4] Air pollution causes around 7 or 8 million deaths each year. [5] [6] It is a significant risk factor for a number of pollution-related diseases, including heart disease, stroke, chronic obstructive pulmonary disease (COPD), asthma and lung cancer.