More than 55 million people are concerned with allergies and asthma problem this year. The ranking of 100 most challenging environments by Asthma and Allergy Foundation of America (AAFA) shows that the country is full of allergic environments. No matter where you live, you have to fight with allergens around you whether inside home or outdoors.

It is not surprising to have May as the national asthma and allergy awareness month because spring is on its peak along with allergies and asthma. Following are the top 10 environments ranked as Spring Allergy Capitals for 2010.

1. Knoxville, TN
2. Louisville, KY
3. Chattanooga, TN
4. Dayton, OH
5. Charlotte, NC
6. Philadelphia, PA
7. Greensboro, NC
8. Jackson, MS
9. St. Louis, MO
10. Wichita, KS

Watch out if you are living in any of the above areas because you might have more allergens around you then others cities. The rankings are based on the following 3 main factors of research analysis by AAFA.

* Number of allergy medications used per patient
* Number of allergy specialists per patient
* Pollen scores (airborne grass/tree/weed pollen and mold spores)*

We can clearly judge the clash between AAFA rankings and outdoors. So people should be more careful visiting outdoors and should follow the easy steps to keep the allergens away from them throughout the year. The job is not only to trigger allergens outdoor but it is also necessary to take a look at your inside air quality as it may also contain more allergens then outdoors.