Low Pollen in Hillsboro, OR

Low today, mostly grass pollen.

Last updated July 1, 2026

Today's index2out of 5Low
GrassLowoff-season

What to do today

  • It's a good day for outdoor activities since pollen levels are low.
  • Do you know which plants cause your pollen allergy? Check out the pollen data to be prepared.

Forecast

Thu
2
Fri
2
Sat
2
Sun
2

About pollen in Hillsboro

Grass pollen is the main player in Hillsboro today, registering a Low level of 2 on the Universal Pollen Index, which puts the overall count at Low as well. Tree and weed pollen are not reported in the current data. The forecast holds steady, with grass expected to stay at 2 across the next five days, so don't anticipate any meaningful change in the near term. This tracks with the season: late June sits within grass pollen's typical late-spring through early-summer stretch in the Willamette Valley, while the tree pollen that dominates spring has largely faded and ragweed's late-summer surge is still weeks off.

Common questions

What is the pollen count in Hillsboro, OR today?
Hillsboro, OR is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by grass pollen. The five-day outlook holds steady around 2 of 5.
Is grass pollen high in Hillsboro, OR right now?
Grass pollen is low today at 2 of 5, and it's past its peak season. Most people won't have symptoms.