An AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality. According to the National Weather Service, AQI focuses on the health effects you ...
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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback