The Asthma and Allergy Foundation of America's 2006 study ranked 100 U.S. cities based on 12 factors, including air quality and available medical treatment. These are the worst cities for asthma sufferers.
1. Scranton, PA
2. Richmond, VA
3. Philadelphia, PA
4. Atlanta, GA
5. Milwaukee, WI
ASTHMA AND ALLERGY FOUNDATION OF AMERICA