Apparently it can. Pollution, smoking, poverty and pollen counts all matter when it comes to asthma.
This is why, no matter how we feel about global warming, a healthy planet earth is vital to our own human health. We should all consider ourselves automatic environmentalists.
Here is the list of the worst cities in the country for asthma and some of the reasons why.
http://www.webmd.com/asthma/slideshow-10-worst-cities-for-asthma
Did your city make the list? What are you doing to make your city or town a healthier place to live?