The Asthma and Allergy Foundation of America (AAFA) announced on April 9 that its 2026 Allergy Capitals report finds people with seasonal pollen allergies may face longer and more severe symptoms as pollen seasons across the United States begin earlier, last longer, and release more pollen. The report offers practical tips for managing symptoms to help improve quality of life.
The findings are significant because increased pollen exposure can disrupt sleep, lead to missed work or school days, and worsen conditions such as allergic rhinitis, asthma, eczema, nasal polyps, and other inflammatory diseases. The AAFA's analysis aims to help individuals better understand their local risks and adopt effective symptom management strategies.
"Allergies are shaped by where you live, the air you breathe, and the environment around you. AAFA’s Allergy Capitals report reveals that people with seasonal pollen allergies in many parts of the U.S. may find managing their symptoms more challenging," said Sanaz Eftekhari, AAFA’s vice president of research. "Climate change is driving some areas to have a nearly year-round cycle of pollen production or experience major pollen explosions multiple times a year due to extreme weather. These longer and more intense pollen seasons mean allergy symptoms may start earlier, last longer, and be more difficult to control. This makes symptom management all the more important."
This year's top ten cities include several from the Western United States—Boise (#1), San Diego (#2), Provo (#4), Ogden (#8), and Spokane (#9)—reflecting how extreme weather events linked to climate change have caused unusually high pollen levels outside traditional hotspots like those in the Southeast.
The typical cycle begins with tree pollen from early February through April; grass pollens dominate mid-April through summer; ragweed appears late summer until first frost—with regional variations in timing.
Helen Meldrum, North America Science Head at Opella (makers of Allegra), said: "We are happy to be partnering with AAFA on this year’s Allergy Capitals report. As the makers of Allegra, we are committed to supporting evidence-based insights like this and helping consumers navigate allergy season with confidence."
Founded in 1953, AAFA describes itself as the oldest and largest non-profit patient organization dedicated to improving lives affected by asthma and allergic diseases through support programs across education, advocacy efforts, research initiatives—and remains certified by National Health Council standards.
