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  1. Air Quality | US EPA - U.S. Environmental Protection …

    2024年11月26日 · The U.S. Air Quality Index is EPA's index for reporting air quality. Every day the AQI tells you how clean or polluted your outdoor air is, along with associated health effects that may be of concern.

  2. AirNow Interactive Map - US EPA

  3. Air Data: Air Quality Data Collected at Outdoor Monitors Across …

  4. Download Files | AirData - US EPA

  5. Air Quality Index (AQI) | AirNow.gov

    Local air quality can affect our daily lives. Like the weather, it can change from day to day. EPA developed the Air Quality Index, or AQI, to make information available about the health effects of the five most common air pollutants, and …

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  7. Air Quality Index (AQI) Basics - AirNow

  8. Our Nation's Air 2023 - US EPA

  9. AirCompare Basic Info - US EPA

    AirCompare provides comparisons of air quality based on factors that have been shown to increase risk from air pollution. These factors can include life stages (children and older adults), specific health conditions (heart or lung disease), …

  10. Air Quality Index Scale and Color Legend - aqicn.org

    7 行 · The table below defines the Air Quality Index scale as defined by the US-EPA 2016 standard:

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