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What is the air quality index (AQI)? | IQAir
http://go.microsoft.com/fwlink/?LinkID=617350
WebAug 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.
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