The red-level air quality index (AQI) category—covering values from 151 to 200—means the air is unhealthy for everyone, not ...

Cities in California, Texas and Arizona are expecting air quality to become unhealthy for sensitive groups on Thursday.

Indiana residents can visit SmogWatch.IN.gov to: View air quality information for all Indiana counties, including a state map of affected counties; Learn more about Air Quality Action Days and ...