7. Edinburgh, United Kingdom
Pollution Index: 15.57
Average Annual Temperature: 48
Edinburgh’s pollution level is pretty low, which definitely makes it one of the best cities to live for people with asthma. It’s not a big city, which means there’s less traffic and better air quality. The University of Edinburgh has been collaborating with the Asthma UK Centre for Applied Research to improve asthma care in the city, which spreads awareness and makes it easier for sufferers to live and be understood.