Very Low Pollen in Sunnyvale, CA

Very low today, mostly tree pollen.

Last updated July 28, 2026

Today's index1out of 5Very Low
TreeVery Low

Driving it today

PistaciaPistaciaPlanePlatanusMapleAcerAshFraxinusLiquidambarLiquidambar

Forecast

Wed
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Thu
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Fri
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About pollen in Sunnyvale

Pollen levels in Sunnyvale are quite low today, with tree pollen the only type registering any activity, and even that is minimal. Most people, including those with sensitivities, should notice little to no irritation from trees such as pistacia, plane, maple, ash, or liquidambar under these conditions. Looking ahead, tree pollen is expected to stay at this same low level over the next several days, offering a stretch of relatively calm air. This lull fits the season well, since local trees typically release their heaviest pollen in spring, meaning late summer tends to bring a natural quiet period before other pollen sources, like weeds, may pick up later in the year.

What to do today

  • Pollen is low today, so it's a good day for outdoor activities.
  • If you're sensitive, rinsing off after time outside still helps.

Tree map

Every dot is a tree near Sunnyvale, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.

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Top tree-pollen sources

The local tree genera behind today's pollen near Sunnyvale. Each bar is that genus's share of the tree pollen.

417 pollen-relevant trees nearby drive today's tree-pollen reading.

  • Pistacia42%
  • PlanePlatanus33%
  • MapleAcer7%
  • AshFraxinus6%
  • SweetgumLiquidambar5%
  • Rhus3%

Meet the trees near you

Get to know the tree types growing around Sunnyvale: what each looks like, how allergenic it is, and when it blooms.

Sweetgum

Sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring
Pear

Pear

Pyrus calleryana

Allergenicity 1/4Blooms spring
Plane

Plane

Platanus acerifolia

Allergenicity 4/4Blooms spring
Pine

Pine

Pinus pinea

Allergenicity 1/4Blooms spring
Ginkgo

Ginkgo

Ginkgo biloba

Allergenicity 1/4Blooms spring
Ligustrum

Ligustrum

Ligustrum lucidum

Allergenicity 2/4Blooms spring
Maple

Maple

Acer platanoides

Allergenicity 3/4Blooms spring
Oak

Oak

Quercus ilex

Allergenicity 4/4Blooms spring
Oak

Oak

Quercus lobata

Allergenicity 4/4Blooms spring
Elm

Elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring
Oak

Oak

Quercus suber

Allergenicity 4/4Blooms spring
Ash

Ash

Fraxinus angustifolia

Allergenicity 4/4Blooms spring
Oak

Oak

Quercus agrifolia

Allergenicity 4/4Blooms spring
Cherry

Cherry

Prunus cerasifera

Allergenicity 1/4Blooms spring
Olea

Olea

Olea europaea

Allergenicity 5/4Blooms spring,summer
Ash

Ash

Fraxinus velutina

Allergenicity 4/4Blooms spring

Common questions

What is the pollen count in Sunnyvale, CA today?
Sunnyvale, CA is at a very low 1 out of 5 on the Universal Pollen Index today, driven mainly by tree pollen. The five-day outlook holds steady around 1 of 5.
Is tree pollen high in Sunnyvale, CA right now?
Tree pollen is very low today at 1 of 5. Most people won't notice it.
What plants are causing allergies in Sunnyvale, CA?
The main sources right now are Pistacia, Plane, Maple, Ash, and Liquidambar.