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Spring Pollen Storm: Where It’s Worst

United States, USAThursday, April 23, 2026

Spring is in full bloom, and with it comes a surge of pollen that’s already making 80 million Americans sneeze, itch, and sniffling. The timing of the pollen storm varies by region—so knowing when and where to brace yourself can make a big difference.

The Pollen Calendar

Season Dominant Source Key Regions
Spring Tree pollen Midwest (mid‑April) – states like Missouri, Illinois, Kentucky
Northern corridor (Washington to New England) – mid‑May
Late Spring / Early Summer Grass pollen South (May) → North (June–July)
Fall Weeds

Tip: Even in the fall, tree and grass pollen can linger, especially in high‑altitude or urban areas.

Cities at Risk

A national allergy report flags the following cities as likely to experience high pollen counts this year:

  • Boise, San Diego, Tulsa, Provo
  • Rochester, Wichita, Raleigh, Ogden, Spokane, Greenville
  • San Francisco, Minneapolis, Salt Lake City, Richmond, Colorado Springs, Little Rock
  • Toledo, New Orleans, Winston‑Salem, Lakeland

If you live in or near any of these locales—or plan to travel there—take a few precautions:

  • Keep windows closed during peak pollen hours (early morning and late afternoon).
  • Use HEPA or high‑efficiency air purifiers inside.
  • Carry antihistamines and consider allergy‑proof eye drops or nasal sprays.

Stay Informed

  • Check local pollen counts daily via weather apps or dedicated allergy sites.
  • Note that individual sensitivity varies; what triggers a flare in one person might be mild for another.
  • Plan outdoor activities when counts are lowest, typically midday or after a rain shower.

By staying prepared and informed, you can keep the allergy season from taking over your spring—and your life.

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