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  2. National Ambient Air Quality Standards - Wikipedia

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

    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]

  3. Why is Ohio's air quality bad today? Here's why the ... - AOL

    www.aol.com/why-ohios-air-quality-bad-153508217.html

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  4. Air pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Air_pollution_in_the...

    A 2020 paper reported that about half of air pollution and half of the resulting deaths are caused by emissions from outside a given state's boundaries, typically from prevailing winds moving west to east. [9] Regulation of air pollution is a shared responsibility between federal, state, and local governments.

  5. Several central Ohio counties under air quality alert ... - AOL

    www.aol.com/air-quality-alert-issued-columbus...

    The temperature at 2 p.m. was 87 degrees, but the heat index—which combines the air temperature and the relative humidity—was 93. ... Central Ohio under air quality alert Thursday as heat wave ...

  6. Air pollutant concentrations - Wikipedia

    en.wikipedia.org/wiki/Air_pollutant_concentrations

    Pollution regulations in the United States typically reference their pollutant limits to an ambient temperature of 20 to 25 °C as noted above. In most other nations, the reference ambient temperature for pollutant limits may be 0 °C or other values.

  7. Air quality alert: Northern Ohio is under the threat of poor ...

    www.aol.com/air-quality-alert-northern-ohio...

    As temperatures soar to near 90 degrees on Tuesday so does the risk for poor air quality across northern Ohio. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800 ...

  8. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    Air pollution is the contamination of air due to the presence of substances called pollutants in the ... U.S. EPA sets limits on certain air ... Ohio in July 1973 ...

  9. NE Ohio under air quality alert due to high temperatures - AOL

    www.aol.com/ne-ohio-under-air-quality-132100192.html

    Sep. 6—An air quality alert has been issued for parts of northeastern Ohio, according to the National Weather Service in Cleveland. The alert is in effect for Ashtabula, Cuyahoga, Geauga, Lake ...