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  1. AQI Basics | AirNow.gov

    The U.S. Air Quality Index (AQI) is EPA's tool for communicating about outdoor air quality and health. The AQI includes six color-coded categories, each corresponding to a range of index values. The higher the AQI value, the greater the level of …

  2. Air quality index - Wikipedia

    An air quality index (AQI) is an indicator developed by government agencies [1] to communicate to the public how polluted the air currently is or how polluted it is forecast to become. [ 2 ] [ 3 ] As air pollution levels rise, so does the AQI, along with the associated public health risk.

  3. Air Quality Index - American Lung Association

    Sep 18, 2024 · The Air Quality Index, or AQI, is the system used to warn the public when air pollution is dangerous. The AQI tracks ozone (smog) and particle pollution (tiny particles from smoke, power plants and factories, vehicle exhaust, and other sources), as well as four other widespread air pollutants.

  4. Unhealthy Air Quality – What To Do | AQI Numbers - University …

    Feb 25, 2022 · Unhealthy air quality and air pollution is measured by the air quality index (AQI). Unhealthy air quality is hazardous for people with lung conditions. Everyone can check the daily AIQ and take steps to protect themselves from air pollution.

  5. Is it safe to be in a place with 400+ AQI : r/AirQuality - Reddit

    Jun 7, 2023 · The short answer is no, it's not safe, but it's also probably not immediately life-threatening. Remember AQI is an index (0-500) that is meant to give a quick understanding of health concern due to exposure of ambient air distilled into one number.

  6. What is the air quality index (AQI)? | IQAir

    Aug 4, 2018 · The Air Quality Index (AQI) is a measurement of air pollutant concentrations in ambient air pollution and their associated health risks. Air pollutants measured in AQI. There are six air pollutants measured in the index formula, including: PM2.5; PM10; carbon monoxide; sulfur dioxide; nitrogen dioxide; ground-level ozone

  7. EPA and local ofi-cials use the AQI to provide simple information about your local air quality, how unhealthy air may afect you, and how you can protect your health. What is the AQI? The AQI is an index for reporting daily air quality. It tells you how clean or unhealthy your air is, and what associ-ated health efects might be a concern.

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

    The Air Quality Index (AQI) tells you how clean or polluted your outdoor air is and the associated health effects that may be of concern.

  9. Air Quality Index - National Weather Service

    The Air Quality Index (AQI) is used for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. The AQI focuses on health effects you may experience within a few hours or days after breathing polluted air.

  10. AQI : Real-time Air Quality Index | Air Pollution Level

    2 days ago · Monitor your location's AQI in real-time. Get the latest air quality index and pollution levels, updated frequently for accurate, actionable information.

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