Source: AQI numbers from Environmental Protection Agency. Air Pollution Index is based on the incidence of airborne lead, NO2, particulate matter, carbon monoxide and ozone depletion.
Green-minded residents love this Colorado city, no. 2 on Money's Best Places to Live list, where you can borrow a bike, and enjoy the nearby mountains. Watch
Using statistics from data provider Onboard Informatics and consultant Bert Sperling of BestPlaces.net, we crunched the numbers in order to zero in on America's best small cities for families. (Last year, we looked at small towns, with populations between 7,500 and 50,000.)
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