Oregon Pollen by City

Oregon's cities read the mild, wet Pacific Northwest pollen calendar: tree pollen peaks Feb–May, grass Apr–Jul, and ragweed Aug–Oct — a mild, wet pattern in which a long grass season is usually the bigger problem than the early tree burst, and ragweed stays light. Every city below has its own page with today’s verdict and the full 12-month season calendar.

All cities in Oregon

425 cities & towns, largest first