If your eyes are itching and your nose is running nonstop this April, you are not imagining it. Allergists and meteorologists confirm that the spring 2026 pollen season is the most intense in at least 10 years, driven by an unusual combination of weather patterns.
Why This Season Is So Severe
A warmer-than-average winter followed by heavy spring rains created ideal conditions for explosive plant growth. Trees began releasing pollen two to three weeks earlier than normal, and the extended warm spell has prolonged the season.
- Pollen counts are running 40% above the 10-year average
- Tree pollen season started 3 weeks early across the East Coast
- Oak, birch, and cedar are the worst offenders this year
- Grass pollen is overlapping with tree pollen in many areas
- Over-the-counter allergy medication sales are up 28%
The Weather Connection
Dr. Leonard Bielory, an allergy researcher at Rutgers University, explains that rising CO2 levels not only warm the planet but also stimulate plants to produce more pollen per flower. Combined with earlier springs and later autumns, the total pollen exposure window has expanded by nearly a month over the past two decades.
What You Can Do
Allergists recommend starting medications before symptoms begin, keeping windows closed during high-pollen days, showering after spending time outdoors, and using HEPA air purifiers indoors. Those with severe allergies should consult their doctor about immunotherapy options.
Weather services now include daily pollen forecasts alongside temperature and precipitation predictions. Check your local pollen count before planning outdoor activities, and consider exercising indoors when counts exceed moderate levels.
