Low Pollen in Thousand Oaks, CA

Low today, mostly weed pollen.

Last updated September 29, 2026

Today's index2out of 5Low
GrassVery Lowin season
WeedLowoff-season

Driving it today

Grasses

Forecast

Wed
1
Thu
2
Fri
2
Sat
2

About pollen in Thousand Oaks

Weed pollen is the most active type in Thousand Oaks today, though it remains at a low level that most people will not notice. Grass pollen is barely present, sitting at a very low level. Overall, this adds up to a mild day for allergy sufferers, with little in the way of airborne irritants to contend with. Looking ahead, conditions should stay fairly steady over the next several days, with grass pollen continuing at a very low level throughout and weed pollen holding in the low range. This fits the seasonal pattern for late September, when weeds such as ragweed and sagebrush are typically the main source of pollen in Southern California, while grass activity has largely wound down and tree pollen from species like oak and sycamore remains dormant until spring. Sensitive individuals may still want to keep an eye on weed levels, but no significant changes are expected in the near term.

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 Thousand Oaks, CA today?
Thousand Oaks, 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 Thousand Oaks, CA right now?
Weed pollen is low today at 2 of 5, and it's past its peak season. Most people won't have symptoms.
What plants are causing allergies in Thousand Oaks, CA?
The main sources right now are Grasses. Grasses (Poaceae, Late spring, summer) is actively pollinating.