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  2. Chicago air quality unhealthy as Canadian wildfire emissions ...

    www.aol.com/chicago-air-quality-unhealthy...

    The air quality in Chicago has reached unhealthy levels as the city is affected by the smoke coming from the wildfires in Canada, where record-beating emissions are leading to the smoke travelling ...

  3. Chicago's air quality ranks among worst in the world - AOL

    www.aol.com/news/chicagos-air-quality-ranks...

    Chicago had the worst air quality in the world Tuesday, according to IQAir.com, a tracking service. The city's air quality index is in the "very unhealthy" category for all age groups, reminiscent ...

  4. List of most-polluted cities by particulate matter concentration

    en.wikipedia.org/wiki/List_of_most-polluted...

    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 ...

  5. 2023 Canadian wildfires - Wikipedia

    en.wikipedia.org/wiki/2023_Canadian_wildfires

    On June 14, an air quality alert was issued for Minnesota due to dangerous air quality levels affecting the state. The air quality in Minneapolis reached 256 at 6:00 pm that day. [ 202 ] On June 27, the smoke spread over the Midwest, causing Chicago to suffer from the worst air quality in the world, reaching 228 AQI. [ 203 ]

  6. Particulate pollution - Wikipedia

    en.wikipedia.org/wiki/Particulate_pollution

    In European countries, air quality at or above 10 micrograms per cubic meter of air (μg/m 3) for PM 2.5 increases the all-causes daily mortality rate by 0.2-0.6% and the cardiopulmonary mortality rate by 6-13%. [35] Worldwide, PM 10 concentrations of 70 μg/m 3 and PM 2.5 concentrations of 35 μg/m 3 have been shown to increase long-term ...

  7. Canadian wildfire smoke causes air quality to deteriorate in ...

    www.aol.com/lifestyle/canadian-wildfire-smoke...

    Canadian wildfire smoke is once again causing air quality to reach unhealthy levels in major cities in the United States, but unlike last week when the thickest smoke blew over the Northeast, the ...

  8. List of countries by air pollution - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_air...

    Air pollution can affect nearly every organ and system of the body, negatively affecting nature and humans alike. Air pollution is a particularly big problem in emerging and developing countries, where global environmental standards often cannot be met. The data in this list refers only to outdoor air quality and not indoor air quality, which ...

  9. National Ambient Air Quality Standards - Wikipedia

    en.wikipedia.org/wiki/National_Ambient_Air...

    Particulate Matter (PM) was listed in the 1996 Criteria document issued by the EPA. In April 2001, the EPA created a Second External Review Draft of the Air Quality Criteria for PM, which addressed updated studies done on particulate matter and the modified pollutant standards done since the First External Review Draft.