
What Allergies Are Bad This Month? Month-by-Month U.S. Pollen Calendar
Use this month-by-month U.S. pollen calendar to compare tree, grass, weed, and mold seasons by region, then check current local conditions before planning exposure.
AllergyAva Resources
Clear, actionable guidance from the AllergyAva Editorial Team. Health-information resources are clinically reviewed before publication.

Use this month-by-month U.S. pollen calendar to compare tree, grass, weed, and mold seasons by region, then check current local conditions before planning exposure.

A clinically reviewed lawn-mowing and yard-work protocol covering respirators, pollen timing, asthma safety, clothing, showering, tools, and cleanup.

A safety-focused guide to thunderstorm asthma, pollen rupture, grass allergy risk, storm preparation, asthma action plans, and emergency breathing signs.

Compare dehumidifiers and air purifiers for pollen, pet dander, dust mites, mold, smoke, and damp rooms using humidity, CADR, and trigger-based buying criteria.

Match birch, grass, ragweed, and mugwort pollen to common food cross-reactions, recognize PFAS symptoms, and identify signs of an emergency.

Make sense of allergy indexes and tree, grass, weed, and mold scores, then turn the next five days of pollen data into a practical plan.

Pollen can affect more than your nose. Recognize asthma warning signs, poor symptom control, and emergencies—and use an action plan to stay protected.

Pollen levels rise and fall with the hour and weather. Time walks, workouts, errands, and yard work to reduce exposure during allergy season.

Ragweed season has a predictable rhythm. Recognize its symptoms, track peak pollen, choose effective treatments, and know when to consult an allergist.

See how tree, grass, and weed pollen differ by season, symptoms, and food cross-reactions, with practical guidance on tracking, testing, and treatment.

Work through an evidence-based bedroom checklist that tackles dust mites, pollen, pet dander, mold, and the exposures behind nighttime symptoms.

From spring trees to late-summer weeds, understand what triggers pollen reactions, when symptoms peak, and which prevention and treatment strategies help.

Prepare before spring pollen spikes with an expert-backed timeline for starting medicine, readying your home, stocking supplies, and limiting exposure.