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Allergy Season In North Carolina: Allergens By Region + Symptoms & Treatment
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Allergy Season In North Carolina: Allergens By Region + Symptoms & Treatment

Shuba Iyengar, MD, MPH
By Dr. Shuba Iyengar Published on Apr 15, 2024
Table of Contents

    North Carolina is renowned for its stunning scenery, lively urban areas, and delectable cuisine. Yet, the state's diverse environment poses challenges for many residents, particularly regarding allergies. From pollen to mold, North Carolina presents a variety of allergens that can induce symptoms in individuals with sensitivities to these substances.

    Don’t worry, we’ve got you covered. Below we’ll dive into everything you need to know about the allergy season in North Carolina. Below we discuss which time of year is the worst for pollen allergies in North Carolina, and a breakdown of the allergen species in each region of the state. At the end, you’ll find a brief overview of common symptoms, along with the best allergy treatments.

    North Carolina Allergy Seasons

    In North Carolina, spring is notorious for high pollen levels, particularly from trees such as oak, pine, and cedar. This season typically starts in March and lasts through May, causing symptoms like sneezing, itchy eyes, and congestion in allergy sufferers.

    During the summer months, grass pollen becomes a major allergen in North Carolina. Grass pollen allergies can trigger symptoms like coughing, wheezing, and shortness of breath. This season usually peaks in June and July.

    As summer transitions to fall, ragweed pollen becomes a prevalent allergen in North Carolina. Ragweed season typically starts in August and can last until the first frost. Allergy symptoms during this time may include runny nose, itchy throat, and fatigue.

    While winter in North Carolina brings relief from outdoor allergens like pollen, indoor allergens such as dust mites and pet dander can still trigger allergies. Symptoms like coughing, chest tightness, and skin rashes may persist during the winter months.


    North Carolina boasts diverse climates and landscapes, leading to varying allergy prevalence across different regions. By grasping the allergy patterns in North Carolina, individuals can effectively handle their symptoms and access suitable treatment. Let's delve into the distinct allergy trends across the regions of North Carolina.

    Coastal Region
    The coastal region of North Carolina is known for its humid climate and abundant vegetation. This environment can lead to higher levels of mold spores and pollen, which are common allergens. Individuals living in the coastal region may experience increased symptoms of allergic rhinitis and asthma due to these environmental factors.

    Piedmont Region
    The Piedmont region of North Carolina has a more moderate climate compared to the coastal area. However, the presence of grasses, trees, and weeds can still trigger allergies in susceptible individuals. Pollen counts tend to be higher in the spring and fall, leading to seasonal allergies for many residents in the Piedmont region.

    Mountain Region
    The mountain region of North Carolina offers a cooler climate and lower humidity levels, which can be beneficial for individuals with certain allergies. However, the mountain region is not immune to allergens, as pollen from trees and grasses can still cause symptoms in some people. Additionally, mold spores may be more prevalent in damp mountain environments.

    Urban vs. Rural Areas
    It's important to note that allergy trends can also vary between urban and rural areas in North Carolina. Urban areas may have higher levels of air pollution, which can exacerbate allergy symptoms. On the other hand, rural areas may have more exposure to outdoor allergens such as pollen and mold.


    What are the most common allergens in North Carolina?
    In North Carolina, the most common allergens include pollen from trees such as oak, pine, and cedar, as well as grasses like Bermuda and Timothy. Mold spores are also prevalent, especially in humid areas.

    Which regions in North Carolina have the highest allergy rates?
    According to recent studies, the regions in North Carolina with the highest rates of allergies are the Piedmont Triad area, including cities like Greensboro, Winston-Salem, and High Point. This region tends to have high pollen counts and mold spore levels, leading to increased allergy symptoms.

    How can you reduce exposure to allergens?
    To reduce exposure to allergens in North Carolina, consider keeping windows closed during peak pollen seasons, using air purifiers with HEPA filters, and regularly cleaning your home to prevent mold growth… and of course Allermi.

    What are the most common outdoor allergens in North Carolina?
    Pollen is a major outdoor allergen in North Carolina, with trees such as oak, pine, and cedar being significant contributors. Grass pollen is also prevalent, especially in the spring and summer months. Mold spores are another common outdoor allergen, thriving in the humid climate of North Carolina.

    Are there specific indoor allergens to be aware of in North Carolina?
    Dust mites are a common indoor allergen in North Carolina, thriving in the warm and humid environment of homes. Pet dander from cats and dogs can also trigger allergies in individuals sensitive to animal proteins. Cockroach allergens are another indoor concern, particularly in urban areas.


    Using multiple over-the-counter allergy treatments is not ideal for getting through allergy season in North Carolina. Skip the drugstore and get a personalized all-in-one allergy treatment from the comfort of your home. 

    Allermi is a customized allergy nasal spray designed by experienced, board-certified allergists to solve your unique seasonal allergy symptoms. The Allermi formula is backed by science to give you the most effective allergy treatment for your individual allergy symptoms. 

    The best part? Allermi nasal spray is easy to use and delivered to your door in North Carolina.