via.q13fox.com
Was a week of bad air like smoking 50 cigarettes?
SEATTLE -- The Pacific Northwest is coming out of some of the worst air quality it has seen in years. And according to at least one analysis by the nonprofit Berkeley Earth, a week of breathing the air was akin to smoking around 50 cigarettes. Or, about 7 cigarettes each day. The analysis, called "Air Pollution and Cigarette Equivalence," equates one cigarette to an air pollution rating (AQI) of 22 for one day. So someone living in an environment with 22 AQI would effectively be smoking a cigarette every day.