The Most Polluted States in America

The Most Polluted States in America

HealthGrove wanted to see which of the 50 U.S. states (and Washington, D.C.) has the most polluted air. Using data from The Centers for Disease Control and Prevention, we analyzed average daily fine particulate matter (ug/m3) from 2003 to 2011.

HealthGrove ranked the 25 most polluted states based on PM2.5 particle levels. For each state, we list the most polluted county as well as the rate of cancer and heart disease deaths — both of which are correlated to air pollutant levels.

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