Allergy Season: Relief for Runny Nose, Itchy Eyes & More

March 23, 2026 Ananya Mittal - World Editor

Welcome to allergy season. For tens of millions of Americans, the arrival of spring—and with it, blossoming trees, grasses, and weeds—signals the start of a period marked by runny noses, itchy eyes, and persistent sneezing. This year, experts suggest, the season may be particularly challenging due to the ongoing effects of climate change, which is lengthening and intensifying pollen seasons.

What’s Driving the Increase in Allergy Symptoms?

The Asthma and Allergy Foundation of America estimates that 106 million Americans suffer from allergies and/or asthma, with pollen-induced seasonal allergies being a significant contributor. A 2021 study highlighted a concerning trend: North American pollen seasons have extended by an average of 20 days between 1990 and 2018. The primary driver behind this change? Climate change. Warmer temperatures are causing plants to release pollen earlier and for a longer duration, increasing exposure for allergy sufferers. USA Today reports that pollen levels are already high in more than 29 states.

It’s not just the length of the season that’s changing. Allergy symptoms are as well becoming more intense. What we have is given that longer, more intense pollen seasons mean a greater overall pollen load in the air, leading to a stronger immune response in susceptible individuals. The type of pollen also matters. Tree pollen typically appears first, starting as early as December or January in some regions, followed by grass pollen in the spring and summer, and finally weed pollen, particularly ragweed, from August until the first hard frost. The Asthma and Allergy Foundation of America provides a detailed breakdown of pollen seasons across the U.S.

How Does Pollen Affect the Body?

Pollen is released by plants as a means of reproduction, carrying genetic material to fertilize other plants of the same species. These tiny pollen grains are easily inhaled, and for some individuals, this triggers an immune response. When someone with a pollen allergy inhales pollen, their immune system mistakenly identifies it as a harmful invader. This leads to the release of histamine and other chemicals, causing the familiar symptoms of allergic rhinitis – commonly known as hay fever. These symptoms include a runny nose, stuffy nose, sneezing, itchy eyes, and even shortness of breath. Johns Hopkins Medicine offers a comprehensive overview of pollen allergies and their effects.

Understanding Allergic Rhinitis

Allergic rhinitis isn’t just a nuisance. it can significantly impact quality of life. Symptoms can interfere with sleep, work, and daily activities. It’s important to distinguish between different types of pollen allergies: tree pollen, grass pollen, and weed pollen. Each type has its own peak season, and individuals may be allergic to one, two, or all three.

What Can You Do to Protect Yourself?

While there’s no cure for pollen allergies, We find several steps you can take to minimize your exposure and manage your symptoms. These strategies focus on reducing pollen contact and mitigating the immune response.

  • Monitor Pollen Counts: Stay informed about local pollen levels. Many weather apps and websites provide daily pollen forecasts.
  • Limit Outdoor Exposure: On days with high pollen counts, try to stay indoors as much as possible.
  • Keep Windows and Doors Closed: This helps prevent pollen from entering your home.
  • Use Air Conditioning: Air conditioners with HEPA filters can remove pollen from the air.
  • Shower and Change Clothes: After spending time outdoors, shower and change your clothes to remove any pollen that may have landed on your skin or clothing.
  • Consider Over-the-Counter Medications: Antihistamines, decongestants, and nasal corticosteroids can help relieve allergy symptoms.

The Role of Climate Change and Future Outlook

The link between climate change and worsening allergy seasons is becoming increasingly clear. Rising temperatures, increased carbon dioxide levels, and changes in precipitation patterns are all contributing to longer and more intense pollen seasons. This trend is expected to continue, potentially leading to even greater challenges for allergy sufferers in the years to come. AccuWeather’s 2026 U.S. Allergy forecast predicts an early, strong season with high tree pollen levels moving north from the South and Ohio Valley.

What Comes Next: Ongoing Research and Surveillance

Public health agencies and research institutions are actively monitoring pollen levels and studying the impact of climate change on allergy seasons. This ongoing surveillance is crucial for understanding the evolving patterns of pollen exposure and developing effective strategies for prevention and management. Researchers are also investigating the potential for new allergy treatments and therapies. The American Academy of Allergy, Asthma & Immunology continues to update guidance on managing allergic rhinitis during pollen season, emphasizing preventative measures and appropriate treatment options.