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 …
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.
Air Quality Index Scale and Color Legend - aqicn.org
The table below defines the Air Quality Index scale as defined by the US-EPA 2016 standard: For more information about the pollutants included in the AQI scale, please refer to: PM 2.5 instant-cast scale. Understanding PM 10 vs PM 2.5. Ozone …
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. Children, the elderly and individuals with respiratory or ...
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.
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.
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.
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. The AQI focuses on health efects you may experience within a few hours or days after breathing unhealthy air.
Air quality index (AQI) | Description, EPA, Pollution, Smog, Health ...
5 days ago · air quality index (AQI), an online, color-coded index created by the U.S. Environmental Protection Agency (EPA) that communicates whether the relative air quality and air pollution level in a given area is healthy or unhealthy.
About Air Quality | Air Quality | CDC - Centers for Disease …
May 14, 2024 · The Air Quality Index (AQI) Sometimes the air quality outdoors may not be safe for everyone. What can you do? Pay attention to the Air Quality Index (AQI). The AQI tells you when high levels of air pollution are predicted and how …