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What is the color-coded Air Quality Index and how is it used?

April 26, 2017air quality color-coded index Used

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What is the color-coded Air Quality Index and how is it used?

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[Back to Top] The Air Quality Index (AQI) is a tool used to report levels of ozone, particles and other pollutants in the air to the public. The AQI scale is divided into five color-coded categories, each corresponding to a different level of health concern ranging from green (good) to purple (very unhealthy). Greater AQI values correspond to greater concentrations of air pollution and indicate greater health danger.