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

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

    To help keep the air quality at lower levels, try to carpool, bike or walk if possible and refuel vehicles after 8 p.m. Try to avoid idling vehicles and use gas-powered lawn equipment, including ...

  3. How to understand the Air Quality Index - AOL

    www.aol.com/news/how-to-understand-the-air...

    Air quality levels in parts of Canada and the US have nosedived in recent days as winds have carried smoke from wildfires in Quebec and Nova Scotia across the continent. Things are bad enough that ...

  4. The best air purifiers of 2025 - AOL

    www.aol.com/lifestyle/best-air-purifiers...

    Our air quality meter recorded the Gen1 transformed a small room’s air quality from 204 micrograms per cubic meter of PM2.5 to 23 in around 40 minutes. That’s almost twice as long as air ...

  5. National Ambient Air Quality Standards - Wikipedia

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

    An air quality control region is an area, designated by the federal government, where communities share a common air pollution problem. [28] See also.

  6. Indoor air quality - Wikipedia

    en.wikipedia.org/wiki/Indoor_air_quality

    Source control, filtration, and the use of ventilation to dilute contaminants are the primary methods for improving indoor air quality. Although ventilation is an integral component of maintaining good indoor air quality, it may not be satisfactory alone. [ 2 ]

  7. Clean Air Act (United States) - Wikipedia

    en.wikipedia.org/wiki/Clean_Air_Act_(United_States)

    The Clean Air Act (CAA) is the United States' primary federal air quality law, intended to reduce and control air pollution nationwide. Initially enacted in 1963 and amended many times since, it is one of the United States' first and most influential modern environmental laws .

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