10 Worst Cities for Allergies and Why

7. Dayton, Ohio

Dayton, Ohio does not hold a strong spot on the list of worst cities for allergies. But its rise in allergy medications keeps it firmly planted on the list. It has been in and out of top 10 lists for years. But springtime allergies can be a concern for sensitive people with allergies as springtime is peak time for tree pollen spikes. Other trees that may cause allergies in Dayton include cedar, beech, juniper and cypress. These trees won’t let up their pollen content until May, so living here may require you to vacation during this time.