Low Pollen in Sunnyvale, CA

About pollen in Sunnyvale

Pollen levels around Sunnyvale are quiet today. Tree pollen is essentially absent, and weeds are barely registering, so most people should notice little to no irritation outdoors today. Looking ahead, tree pollen is expected to stay at rest over the next several days, while weed pollen may edge up slightly to a low but noticeable level for those who are particularly sensitive. This lines up with the seasonal pattern: local trees like Plane, Pistacia, Prunus, Celtis, and Honeylocust typically finish their pollen release in spring, leaving late summer as a quieter stretch dominated by low-level weed activity rather than the heavier tree or grass seasons.

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.

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.

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.

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

Liquidambar styraciflua

Allergenicity 2/4Blooms spring

Pear

Pyrus calleryana

Allergenicity 1/4Blooms spring

Plane

Platanus acerifolia

Allergenicity 4/4Blooms spring

Pine

Pinus pinea

Allergenicity 1/4Blooms spring

Ginkgo

Ginkgo biloba

Allergenicity 1/4Blooms spring

Ligustrum

Ligustrum lucidum

Allergenicity 2/4Blooms spring

Maple

Acer platanoides

Allergenicity 3/4Blooms spring

Oak

Quercus ilex

Allergenicity 4/4Blooms spring

Oak

Quercus lobata

Allergenicity 4/4Blooms spring

Elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

Oak

Quercus suber

Allergenicity 4/4Blooms spring

Ash

Fraxinus angustifolia

Allergenicity 4/4Blooms spring

Oak

Quercus agrifolia

Allergenicity 4/4Blooms spring

Cherry

Prunus cerasifera

Allergenicity 1/4Blooms spring

Olea

Olea europaea

Allergenicity 5/4Blooms spring,summer

Ash

Fraxinus velutina

Allergenicity 4/4Blooms spring

Common questions

What is the pollen count in Sunnyvale, CA today?

Sunnyvale, 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 Sunnyvale, 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 Sunnyvale, CA?

The main sources right now are Plane, Pistacia, Prunus, Celtis, and Honeylocust.