American Lung Association – State of the Air 2017 – “For 18 years, the American Lung Association has analyzed data from official air quality monitors to compile the “State of the Air” report. The more you learn about the air you breathe, the more you can protect your health and take steps to make our air cleaner and healthier.” [Washington DC received an F this year for Ozone Level – along with the statement – “If you live in Washington, DC, the air you breathe may put your health at risk.”