Pollen in San Leandro, CA

About pollen in San Leandro

Pollen levels in San Leandro are quiet today, with tree pollen sitting at essentially none. Anyone who typically reacts to airborne allergens should find the air calm, with little to no irritation expected from trees such as pyrus, liquidambar, malus, albizia, or crataegus, all of which are dormant at this point in the year. Looking ahead, conditions are expected to remain settled, with no meaningful rise in tree pollen anticipated over the next few days. This tracks with the season — local trees typically release their pollen in spring, so a lull in early October is normal. For now, those sensitive to tree pollen can expect a comfortable stretch with little to monitor.

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 Leandro, 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 Leandro. 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 Leandro: what each looks like, how allergenic it is, and when it blooms.

Sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring

Cherry

Prunus L.

Allergenicity 1/4Blooms spring

Pear

Pyrus calleryana

Allergenicity 1/4Blooms spring

Plane

Platanus acerifolia

Allergenicity 4/4Blooms spring

Ash

Fraxinus

Allergenicity 4/4Blooms spring

Pear

Pyrus kawakamii

Allergenicity 1/4Blooms spring

Oak

Quercus

Allergenicity 4/4Blooms spring

Maple

Acer L.

Allergenicity 3/4Blooms spring

Cypress

Cupressus

Allergenicity 4/4Blooms winter,spring

Hackberry

Celtis L.

Allergenicity 3/4Blooms spring

Ginkgo

Ginkgo biloba

Allergenicity 1/4Blooms spring

Cherry

Prunus serrulata

Allergenicity 1/4Blooms spring

Maple

Acer palmatum

Allergenicity 3/4Blooms spring

Elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

Locust

Robinia

Allergenicity 2/4Blooms spring

Ligustrum

Ligustrum

Allergenicity 2/4Blooms spring

Common questions

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

San Leandro, CA has no notable tree, grass, or weed pollen today.

What plants are causing allergies in San Leandro, CA?

The main sources right now are Pyrus, Liquidambar, Malus, Albizia, and Crataegus.