Climate Change Extends Allergy Season: How to Cope with Rising Pollen Levels
March 22, 2026
Weather-driven pollen shifts are extending allergy seasons as milder winters and longer growing periods raise airborne pollen levels, contributing to one of the most intense seasons seen last year, especially in the Southeast.
Tree, grass, and weed pollens drive symptoms, with trees early in spring, grasses in mid-season, and weeds late, including common culprits like birch, cedar, cottonwood, maple, elm, oak, walnut, and Bermuda and Johnson grasses.
Practical steps and treatment options are emphasized, alongside note of evolving guidance in allergy management.
Pollen tracking resources are available through the AAAAI, with networks of counting stations online and via email to help plan outdoor activities.
AAAI networks monitor pollen levels to inform outdoor planning and allergy management.
Many Americans endure miserable allergy seasons with runny noses, itchy eyes, sneezing, and coughing, as climate change prolongs and intensifies pollen exposure.
Credible sources cited include Climate Central, AccuWeather, the CDC, WHO, AAFA, the USA National Phenology Network, and USA TODAY, with updates as coverage evolves.
The piece builds on a 2025 AP version and incorporates ongoing guidance from institutions such as the University of Michigan, Augusta University, and Oregon Health & Science University.
First line of defense is to reduce exposure: keep windows closed, wear long sleeves, shower and change clothes after outdoor time, and consider masks though they don’t prevent eye symptoms.
Saline rinses and proper eye/nasal care are recommended, along with timing outdoor activities to minimize exposure.
The Asthma and Allergy Foundation of America names Boise, San Diego, Tulsa, Provo, and Rochester as top allergy-impacted cities this year based on medicines use, pollen counts, and access to specialists.
Dermal guidance includes directing nasal sprays toward the outer ear and consulting an allergist if symptoms impair sleep, concentration, or quality of life; debunked remedies like local honey are mentioned.
Summary based on 11 sources
Get a daily email with more Science stories
Sources

USA TODAY • Mar 20, 2026
Having seasonal allergies? Here's where pollen counts are on the rise
Newsday • Mar 22, 2026
Welcome to allergy season. Here's how to protect yourself
Spectrum News NY1 • Mar 22, 2026
Welcome to allergy season. Here's how to protect yourself