Our proprietary Airways Clinical Research Centers (ACRC) Network is a jewel in the crown of the American Lung Association research program. As the nation’s largest not-for-profit network of clinical ...

Review our methodology for a full explanation of data sources and calculations utilized to assign grades for the air you breathe. The colors used in “State of the Air" are based on the Air Quality ...

Areas throughout the Midwest, including parts of Illinois, will see their air quality impacted by smoke from wildfires burning in Canada this weekend. The smoke is prompting several communities to ...