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  2. Air pollution in the United States - Wikipedia

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

    After a steady 23-year decline in US pollution levels through 2017, the American Lung Association's State of the Air 2022 report found a sharp uptick in pollution over the past five years. [ 96 ] According to the American Lung Association's State of the Air 2024 report, California retains its position of being the state with the most metro ...

  3. Pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Pollution_in_the_United_States

    State-level environmental policy, especially in clean air regulation, plays a key role in enforcement, air quality monitoring, and setting pollution standards that sometimes go beyond federal requirements set by the U.S. Environmental Protection Agency (EPA).

  4. Air quality index - Wikipedia

    en.wikipedia.org/wiki/Air_quality_index

    This index pays particular attention to people who are sensitive to air pollution. It provides them with advice on how to protect their health during air quality levels associated with low, moderate, high and very high health risks. The AQHI provides a number from 1 to 10+ to indicate the level of health risk associated with local air quality ...

  5. Nearly 40% of people in the US live with unhealthy air ... - AOL

    www.aol.com/nearly-40-people-us-live-040127074.html

    Using their analysis, the researchers gave US counties “grades” for their individual levels of air pollution – based on ozone and particle pollution – and found that 65 million people live ...

  6. Los Angeles air quality improves from wildfires' hazardous levels

    www.aol.com/news/los-angeles-air-quality...

    800-290-4726 more ways to reach us. ... Air quality in the moderate range can still be risky for people who are unusually sensitive to air pollution. ... Early that day, hourly pollution levels ...

  7. 131 million in U.S. live in areas with unhealthy pollution ...

    www.aol.com/news/131-million-u-live-areas...

    Nearly 40% of people in the U.S. are living in areas with unhealthy levels of air pollution and the country is backsliding on clean air progress as the effects ... 800-290-4726 more ways to reach us.

  8. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    Growing evidence that air pollution—even when experienced at very low levels—hurts human health, led the WHO to revise its guideline (from 10 μg/m 3 to 5 μg/m 3) for what it considers a safe level of exposure of particulate pollution, bringing most of the world—97.3 percent of the global population—into the unsafe zone.

  9. Unhealthy levels of particle pollution activates Knozone ...

    www.aol.com/unhealthy-levels-particle-pollution...

    The current air quality forecast indicates that levels of fine particulates in the Unhealthy for Sensitive Groups (USG) range are possible starting around 8 p.m. Monday and lasting until 8 a.m ...