The 5 Worst Fall Allergies

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Ragweed is the main fall allergen.  Its pollen is released into the air from August until frost kills the plant, a period that can last until late October. To avoid bad reactions to ragweed, check the pollen count each day, and stay indoors, with air conditioning, as much as possible. And if it's an option, you may want to try to take a vacation out West because ragweed is mainly in the East and Midwest.


Mold is another big fall allergen, though it can be present all year long. Indoor mold can be a problem, but outdoor mold is especially bad in the fall due to wet, fallen leaves. If you encounter allergies while outside raking leaves, mowing the lawn or trimming shrubs, you may want to call your allergist about stronger antihistamines.

Dust mites

As the weather turns cool and we start turning up the thermostat, the warmer air can stir up dust mites in the home, causing a bout of allergies. Make sure to vacuum and clean, and change any air filters to protect yourself against mites.


People who live near corn fields being harvested may experience more allergies, as corn is a member of the grass family. Grass allergies are very common, and typically a combination of antihistamines and nasal spray can clear up a runny nose.

Animal dander

As pets begin spending more time inside due to the colder weather, their animal dander may build up in the house, causing allergies. Cat allergies are the most common, so rather than kick out your furry friend, try talking to your allergist about a treatment plan.