Spring's arrival in the U.S. brings not only warmer weather and blossoming flowers but also a challenging allergy season for millions. Pollen-induced allergies are expected to affect 106 million Americans this year, exacerbated by climate change, which has extended pollen seasons by an average of 20 days. The Western and Southern regions of the U.S. are experiencing a surge in tree, grass, and weed pollen, moving northward from the South and Ohio Valley. AccuWeather forecasts an early and strong allergy season due to warmer temperatures and spring storms.