Pollen in San Jose, CA

About pollen in San Jose

Pollen levels in San Jose are quiet today, with tree pollen reading essentially absent. Anyone sensitive to trees like plane, maple, podocarpus, eucalyptus, or pittosporum should find little to no irritation in the air right now, making this a comfortable stretch for outdoor time. Looking ahead, conditions are expected to hold steady at this low level over the next few days. This tracks with the season, since the main tree pollen push in the South Bay typically comes and goes earlier in the year, well before midsummer. With grass season winding down and ragweed still weeks away, this is generally a calmer window for allergy sufferers, though it is always worth checking back in case local conditions shift.

What to do today

• Pollen is minimal today, so it's a great time to be outside.
• No special pollen precautions are needed right now.

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 has no notable tree, grass, or weed pollen today.

What plants are causing allergies in San Jose, CA?

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