Why seasonal allergies may feel worse now in the U.S. — and what helps

Seasonal allergies can feel more intense than they used to, especially during high-pollen weeks. CDC reported in January 2026 that about 3 in 10 U.S. adults and children said they had a seasonal allergy, eczema, or food allergy in 2024.

The main takeaway is simple: if your symptoms are from pollen, the best first steps are usually to reduce exposure and use over-the-counter allergy medicine as directed. Antibiotics do not help seasonal allergies.

Why allergies can seem worse

CDC says pollen is an airborne allergen, and climate-related changes can increase pollen concentrations and lengthen pollen seasons. That can mean more days with sneezing, congestion, and itchy eyes for people who are sensitive to tree, grass, or weed pollen.

Exposure can also worsen asthma. CDC notes that pollen exposure is linked to asthma attacks and more respiratory hospital visits, which is one reason allergy season can be harder for some people than for others.

What seasonal allergies usually feel like

Common symptoms include sneezing, a runny nose, nasal congestion, and itchy or watery eyes. Some people also get throat irritation or feel unusually tired when symptoms are active.

Those symptoms can overlap with a cold, so the pattern matters. Allergies often show up around the same season each year and can worsen outdoors or on windy days.

What does not help

CDC’s antibiotic guidance is clear: antibiotics do not treat seasonal allergies. Because allergies are not caused by bacteria, antibiotics will not relieve the symptoms and can cause unnecessary side effects.

What readers can do

Check local pollen forecasts before spending long periods outdoors.
Shower and change clothes after being outside on high-pollen days.
Keep windows closed when pollen counts are high if that helps your symptoms.
Use over-the-counter allergy medicines only as directed on the label, and ask a clinician or pharmacist if you are unsure which one fits your symptoms or other health conditions.

When it might be more than allergies

Seek urgent care if symptoms include wheezing, shortness of breath, chest tightness, or trouble speaking in full sentences, since that can point to asthma or another breathing problem. Get emergency help right away for signs of anaphylaxis, a serious allergic reaction that can involve swelling, breathing trouble, dizziness, or fainting, according to MedlinePlus.

Food allergies are a separate issue

If you also live with food allergies, the FDA says packaged foods must identify major allergens, and sesame is now one of the major allergens recognized under U.S. law. That labeling change can help people avoid trigger foods, but it does not affect seasonal pollen allergies.

For most people, seasonal allergies are a quality-of-life problem rather than a danger. But if symptoms are frequent, hard to control, or tied to breathing problems, it is worth bringing them up with a clinician.

Sources

Editorial note: Weence articles are researched from cited public-health, medical, regulatory, journal, and reputable news sources and may be drafted with AI assistance. They are checked for source support, clarity, and safety guardrails before publication.

This article is for general informational purposes only and is not medical advice. Research findings can be early or incomplete, and health guidance can change. Always talk with a qualified healthcare professional about personal symptoms, diagnosis, medications, vaccines, screenings, or treatment decisions. If you think you may have a medical emergency, call emergency services right away.