Low Pollen in Irvine, 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
2
Thu
2
Fri
2
Sat
2

About pollen in Irvine

Weed pollen is the main presence in Irvine today, though levels are low enough that most people won't notice much effect. Grass is barely registering, sitting at a very low level, while tree pollen is absent altogether. Overall, this is a mild day for allergy sufferers, with only those especially sensitive to weeds likely to feel any irritation. Looking ahead, this pattern should hold steady through the next several days, with weed pollen staying low and grass remaining minimal. Tree pollen is expected to stay quiet as well, which fits the season, since local trees like oak, sycamore, and eucalyptus typically release most of their pollen in late winter and spring, not fall. Weeds such as ragweed are more typical culprits this time of year, and the current low readings suggest a relatively calm stretch ahead for allergy-prone residents.

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 Irvine, CA today?
Irvine, CA is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. The five-day outlook holds steady around 2 of 5.
Is weed pollen high in Irvine, 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 Irvine, 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.