Moderate Pollen in San Jose, CA

About pollen in San Jose

Tree pollen is the main story in San Jose today, sitting at a moderate level that sensitive individuals will likely notice, while grass and weed pollen remain very low and should cause little concern. If you find yourself with mild sniffles or watery eyes outdoors, tree species are the most probable cause right now. Looking ahead, tree pollen is expected to hold steady over the next several days, so those with sensitivities should anticipate similar conditions rather than a sudden change. This is a bit later in the year than the typical spring peak for tree pollen, but species like plane, ash, ligustrum, Washingtonia, and oak can still release pollen into early fall in this region. Grass and weed levels look set to stay low throughout the forecast period, offering a bit of relief on those fronts even as tree pollen continues to linger.

What to do today

• Pollen is moderate today; sensitive people should limit long stretches outdoors, especially in the afternoon.
• Shower and change clothes after spending time outside.
• Keep windows closed during the highest-pollen hours.

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 moderate 3 out of 5 on the Universal Pollen Index today, driven mainly by tree pollen. Over the next five days it ranges from 1 to 3 of 5.

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

Tree pollen is moderate today at 3 of 5. Sensitive people may notice symptoms.

What plants are causing allergies in San Jose, CA?

The main sources right now are Plane, Ash, Ligustrum, Washingtonia, and Oak.