Low Pollen in San Jose, CA

About pollen in San Jose

Tree pollen is the main driver in San Jose today, sitting at a moderate level and lifting the overall index to moderate as well. Grass pollen remains low for now, and the five-day forecast holds it steady at that low reading throughout, suggesting no near-term spike from grasses. The lingering tree contribution likely reflects late-season activity from local species such as Plane, Ash, Ligustrum, Washingtonia, and Oak. With the calendar in late June, tree pollen is generally past its spring peak while grass tends to dominate through late spring and early summer. Weed pollen is not reported in today's data, so it cannot be assessed here.

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 San Jose, 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 San Jose. Each bar is that genus's share of the tree pollen.

Meet the trees near you

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

Cypress

Cupressus sempervirens

Allergenicity 4/4Blooms winter,spring

Zelkova

Zelkova serrata

Allergenicity 2/4Blooms spring

Sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring

Plane

Platanus acerifolia

Allergenicity 4/4Blooms spring

Ash

Fraxinus uhdei

Allergenicity 4/4Blooms spring

Cherry

Prunus cerasifera

Allergenicity 1/4Blooms spring

Ginkgo

Ginkgo biloba

Allergenicity 1/4Blooms spring

Pine

Pinus canariensis

Allergenicity 1/4Blooms spring

Juniper

Juniperus chinensis

Allergenicity 5/4Blooms winter,spring

Ash

Fraxinus angustifolia

Allergenicity 4/4Blooms spring

Elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

Oak

Quercus suber

Allergenicity 4/4Blooms spring

Oak

Quercus ilex

Allergenicity 4/4Blooms spring

Oak

Quercus agrifolia

Allergenicity 4/4Blooms spring

Hackberry

Celtis sinensis

Allergenicity 3/4Blooms spring

Mulberry

Morus

Allergenicity 5/4Blooms spring

Common questions

What is the pollen count in San Jose, CA today?

San Jose, CA is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by grass pollen. The five-day outlook holds steady around 2 of 5.

Is grass pollen high in San Jose, CA right now?

Grass 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 San Jose, CA?

The main sources right now are Plane, Maple, Podocarpus, Eucalyptus, and Pittosporum.