The index is on a scale of 0 to 500 (0 being ... What to do when there is poor air quality If the air quality in your area is compromised, there are several things you can do to protect yourself.

This map tracks air quality near Detroit, and zoom out to see the rest of North America. Smoke from wildfires harmed the air in 2023.

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 ...