Low Pollen in Chico, CA

Low today, mostly weed pollen.

Last updated September 29, 2026

Today's index2out of 5Low
TreeNonein season
GrassVery Lowin season
WeedLowin season

Driving it today

GrassesRagweed

Forecast

Wed
1
Thu
1
Fri
1
Sat
1

About pollen in Chico

Pollen levels in Chico are quiet today. Tree pollen is absent altogether, while grass and weeds are both present only at very low levels. For most people, this means little to no irritation, though those with strong sensitivities to weeds may notice a faint effect. Looking ahead, this calm pattern should hold through the next several days. Grass is expected to stay very low, and weed pollen may tick up slightly at one point before settling back down. Tree pollen should remain absent through the period, which fits the season, since local trees like oak and ash are long past their spring peak. Weeds such as ragweed are typically more active this time of year, so the slight uptick expected is consistent with a normal early autumn pattern in the area.

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.

Common questions

What is the pollen count in Chico, CA today?
Chico, CA is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 1 to 2 of 5.
Is weed pollen high in Chico, CA right now?
Weed pollen is low today at 2 of 5, and it's in season now. Most people won't have symptoms.
What plants are causing allergies in Chico, CA?
The main sources right now are Grasses and Ragweed. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.