The Air Quality Index does not take into account many gas or particle contaminants that are produced during wildfires, ...

This measure, based on data from the Environmental Protection Agency, evaluates states on the number of days the Air Quality Index in counties was not rated “good.” U.S. News calculated a ...

Several Central Ohio and Southwest Ohio counties are under an air quality alert today. The National Weather ... an air quality index of 101, an alert is issued. Ozone is a gas made up of three ...