Overview
- Clinicians report an earlier start to symptoms in parts of the country, with the Intermountain West seeing tree pollen peak ahead of schedule.
- Experts say milder winters and higher carbon dioxide now drive longer, more intense pollen seasons that hit sufferers harder.
- The Asthma and Allergy Foundation of America estimates at least 106 million people in the U.S. have allergies, underscoring a large and growing burden.
- The foundation’s 2026 ranking lists Boise as the most challenging city for allergy sufferers, followed by San Diego, Tulsa, Provo, and Rochester, with Richmond also in the top 20.
- Allergists urge early use of nasal steroid sprays or antihistamines plus simple steps like shutting windows, showering after time outside, saline rinses, mask use, and seeking specialist care when symptoms disrupt daily life.