2026’s Worst U.S. Cities for Spring Allergies: Full Ranking & Expert Tips

The Asthma and Allergy Foundation of America (AAFA) has released its 2026 ranking of the top 20 worst U.S. cities for spring allergies, highlighting how climate change is extending and intensifying allergy seasons nationwide. Experts warn that allergy-driven symptoms are becoming more severe and persistent, making it crucial for residents in high-risk areas to take proactive measures.

“Allergy seasons are getting longer and worse all the time, and I think we can expect an increase in allergy-driven symptoms this spring and every spring going forward.”

Greenspan added that increased heat, humidity, and compromised air quality—along with greater allergen exposure—are key factors worsening allergy symptoms. He emphasized that the impact of environmental triggers varies significantly by geographic location.

Top 20 Worst U.S. Cities for Spring Allergies in 2026

The AAFA ranked the top 100 “allergy capitals” in the contiguous U.S. for 2026 based on pollen scores for tree, grass, and weed pollen, over-the-counter allergy medication use, and the number of allergy specialists. Notably, more Western cities have made the top 20 compared to previous years. The full list of 100 cities is available in the AAFA 2026 report.

• Boise, ID
• San Diego, CA
• Tulsa, OK
• Provo, UT
• Rochester, NY
• Wichita, KS
• Raleigh, NC
• Ogden, UT
• Spokane, WA
• Greenville, SC
• San Francisco, CA
• Minneapolis, MN
• Salt Lake City, UT
• Richmond, VA
• Colorado Springs, CO
• Little Rock, AR
• Toledo, OH
• New Orleans, LA
• Winston-Salem, NC
• Lakeland, FL

Expert Tips for Managing Spring Allergies

The American College of Allergy, Asthma, Immunology (ACAAI) recommends the following strategies to reduce exposure and alleviate symptoms:

• Monitor pollen counts: Check local pollen forecasts and avoid outdoor activities during high-pollen periods.
• Keep windows closed: Seal your home and car to prevent pollen from entering; use HVAC systems with high-efficiency filters to trap allergens.
• Limit outdoor time: Reduce exposure during peak pollen hours, typically early morning and late afternoon.
• Wear protective gear: Use sunglasses and hats to shield your eyes and hair from pollen when outdoors.
• Shower after being outside: Rinse off pollen from your skin, hair, and clothing to prevent indoor contamination.
• Use air purifiers: Consider HEPA filters to clean indoor air and reduce allergen concentrations.

For residents in the top 20 allergy capitals, these steps can help mitigate the impact of worsening pollen seasons driven by climate change.