Pollen seasons are no longer a joke among allergists; they're now scientifically documented to be worse than ever before, with climate change directly extending the duration and intensity of seasonal allergies. Warmer temperatures and rising carbon dioxide levels are causing trees, grasses, and weeds to release more pollen into the air, while new plant species are appearing in northern regions that were previously too cold for them to survive . For the tens of millions of Americans living with seasonal allergies and asthma, this means more weeks of misery, more severe symptoms, and a growing public health burden that extends far beyond sneezing and itchy eyes.

Why Is Pollen Season Getting Worse Every Year?

The connection between climate change and worsening allergies is no longer theoretical. Climate change has created multiple overlapping environmental stressors that trigger allergic reactions and asthma attacks. Beyond pollen itself, warmer temperatures and extreme weather patterns are increasing mold growth during floods and humid conditions, while wildfire smoke now travels hundreds of miles into communities far from the fires themselves . On hot, sunny days with stagnant air, ozone levels and small particulates spike, all of which worsen symptoms for people with allergies and asthma.

The economic toll is staggering. Poor control of allergies and asthma contributes to missed work and school days, emergency department visits, and hospitalizations. Asthma attacks remain a leading cause of hospitalizations in the United States, accounting for approximately 10 deaths per day . For individuals, the hidden burden goes beyond medical costs; it includes fatigue, difficulty concentrating at work, and the constant distraction of itching and congestion.

How Can You Protect Your Indoor Air During High Pollen and Pollution Events?

While combating climate change requires large-scale societal action, allergists emphasize that individuals can take concrete steps to reduce their exposure to airborne triggers and protect their respiratory health. The following strategies are recommended by board-certified allergists to minimize symptoms during peak pollen and poor air quality days:

• Stay Indoors During Peak Hours: Pollen levels are highest in the morning, so limit outdoor time during early hours when trees and grasses are actively releasing pollen into the air.
• Use HEPA Air Purifiers: High-efficiency particulate air (HEPA) filters in your home can capture microscopic pollen particles and other airborne pollutants, significantly improving indoor air quality.
• Keep Windows and Doors Closed: On high pollen days, keep both home and car windows closed and rely on air conditioning to maintain clean indoor air.
• Wear Protective Masks: During high pollen or smoke events, wear an N95 mask when you must go outside to block inhalation of airborne particles.
• Avoid Outdoor Exercise During Poor Air Quality: Strenuous outdoor activity increases the amount of air you breathe in, so exercise indoors or wait for better air quality days.
• Reduce Mold Exposure: Use dehumidifiers in damp areas, fix water leaks promptly, ventilate bathrooms and kitchens well, and clean visible mold immediately to prevent allergic reactions.
• Maintain Asthma Medications: Keep up with preventative inhalers and controller medications, which are especially important during high pollen seasons.

These strategies work together to create a protective barrier between you and airborne allergens and pollutants. The combination of indoor air filtration, reduced outdoor exposure during peak times, and consistent medication use can significantly reduce symptom severity and prevent asthma attacks .

For people with allergies or asthma, working with a board-certified allergist is essential for developing an individualized treatment plan. Allergists specialize in understanding the specific triggers affecting each person and can recommend targeted therapies that go beyond over-the-counter antihistamines. The American College of Allergy, Asthma and Immunology offers an online tool to help you locate board-certified allergists in your area .

"We love helping people feel better and keeping them out of the hospital. We also know the hidden burden these conditions cause, such as trying to work or simply be present while dealing with fatigue and constant itching," said Dr. Stukus, professor of clinical pediatrics and director of the Food Allergy Treatment Center at Nationwide Children's Hospital in Columbus, Ohio.

Dr. Stukus, Professor of Clinical Pediatrics and Director of the Food Allergy Treatment Center at Nationwide Children's Hospital

The reality is that pollen seasons will likely continue to worsen as climate change accelerates. However, by taking proactive steps to protect your indoor air quality and working with allergists to manage your symptoms, you can reduce the impact on your health, sleep quality, and daily functioning. The goal is not to eliminate all exposure, which is impossible, but to create a safe indoor environment where your respiratory system can recover and where you can maintain your quality of life during peak allergy seasons.