Was October 27, 2026 a high pollen day in Hillsboro?
NO
No — late October in Hillsboro is a low-to-none pollen season, and today's rain is washing what's left out of the air.
Why
- Rain, 7.9 mm forecast, knocks pollen out of the sky
- Air quality Good: US AQI 24, PM2.5 4.4
- Ragweed and grass season over; first frost due about Oct 23