The arrival of spring brings warmer temperatures and blossoming flowers, but also an increase in pollen counts across the United States, impacting millions with seasonal allergies. Pollen levels are rising in over 29 states, especially in the Western and Southern regions, because climate change is extending pollen seasons by about 20 days between 1990 and 2018. The Asthma and Allergy Foundation of America estimates that 106 million Americans suffer from allergies and asthma, with pollen as a significant trigger. Common symptoms include sneezing, runny nose, itchy eyes, and congestion, which can significantly impact daily life.