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 ...
Delhi residents breathed easier Thursday as air quality improved to 'moderate' after a month of severe pollution. The AQI ...
Delhi's air quality improved significantly on Wednesday, with the AQI nearing the 'moderate' category at 211. Delhi's Air ...