Adult Outdoor Allergies Triggers, Symptoms, and Relief

Outdoor allergy sufferers: You’re not alone!

A young woman peacefully laying outside on a mat in the daytime.

Allergic rhinitis, often called hay fever, affects 19.2 million adults and 5.2 million children.1

The most common outdoor allergy trigger is pollen, a powdery substance released for fertilization by trees, grass, and weeds.1

In early spring, tree pollen gets blown around. In late spring and early summer, it’s grass pollen. And in late summer/early fall, it’s weed pollen. But that all depends on your location, climate, and the local greenscape. In temperate climates, pollination can happen year-round.2

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Here’s what “allergy” actually means

An allergic reaction is the result of your immune system responding to an allergen, which is basically an irritant. When your body responds to an allergen, it produces antibodies called Immunoglobulin E (IgE). That causes your cells to release chemicals to rid the body of allergens. All those allergic symptoms — the sneezing, coughing, and congestion — are evidence of your body’s self-defense.3

If you’re allergic, you’ll recognize these symptoms

Whenever pollen in the air increases, so can allergic reactions. Your body can be allergic to any type of pollen and as the many different pollen counts fluctuate, an allergic reaction can be triggered.³

The common signs and symptoms of adult outdoor allergies include:²

  • Runny/stuffy nose
  • Itchy eyes
  • Itchy nose or throat
  • Sneezing

If you experience any of these symptoms, we recommend speaking with your primary care provider or an allergist. Discuss your symptoms and get a diagnosis.

How to cope

It’s very difficult to avoid plant pollen, but there are a few things you can do:²,,

   When you’re inside, keep doors and windows shut

   Run an air conditioner

   Avoid outdoor activities when pollen counts are high.

   Wear a pollen mask

   Shower after being outdoors

   Avoid chores like mowing the lawn or raking leaves

A woman stands in a field and smells a sunflower.

Allegra® is here to help fight outdoor allergies

Allegra® works to block histamines, providing 24-hour relief from allergy symptoms.

Allegra® helps you live your best life by relieving many common outdoor allergy symptoms. If you experience sneezing, runny nose, itchy, watery eyes, or an itchy nose or throat, Allegra® can help. For nasal congestion, sinus congestion and pressure, swelling of nasal passages, and other allergy symptoms, try Allegra-D®.

No matter which product you choose, you can feel good knowing Allegra® is the #1 allergist-recommended non-drowsy brand of adult OTC antihistamines.* 

Find the Allegra® product that’s right for you.


  1. Andrew Moore, MD, reviewed. Indoor Allergens, American Academy of Allergy, Asthma & Immunology [],

    February 28, 2020.

  2. Andrew Moore, MD, Reviewed. Outdoor Allergens, American Academy of Allergy, Asthma & Immunology (,

    September 28, 2020. Oct. 5, 2021.

  3. Andrew Moore, MD, Reviewed. Seasonal Allergies, American Academy of Allergy, Asthma & Immunology [],

    December 28, 2017. Oct. 5, 2021.

  4. Andrew Moore, MD, Reviewed. Indoor Allergens, American Academy of Allergy, Asthma & Immunology [],

    February 28, 2020. Oct. 5, 2021

  5. Jonathan Corren, MD. Allergic rhinitis: Treating the adult, The Journal of Allergy and Clinical Immunology,

    June 1, 2000. Oct. 5, 2021.

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*Among OTC oral antihistamines.