Was October 27, 2026 high ragweed pollen in Hillsboro?
NO
No — late October is past ragweed season in Hillsboro, and no US ragweed count is reported today.
Why
- Ragweed pollen season typically ends with the first hard frost
- Current US air quality is Good, with a US AQI of 22
- Ragweed pollen readings are only published for Europe, not here