Very Low Pollen in Berkeley, CA

Very low today, mostly grass pollen.

Last updated September 28, 2026

Today's index1out of 5Very Low
TreeNone
GrassVery Lowoff-season
WeedVery Lowoff-season

Driving it today

AshFraxinusLiquidambarLiquidambarTristaniopsisTristaniopsisPittosporumPittosporumPrunusPrunus

Forecast

Tue
1
Wed
1
Thu
1
Fri
1

About pollen in Berkeley

Berkeley's air is quiet on the pollen front today. Tree pollen is essentially absent, while grass and weed pollen are both present but at very low levels. Most people, even those with sensitivities, should notice little to no irritation. Looking ahead, the picture stays much the same through the next several days, with grass and weed pollen holding steady at low levels and tree pollen remaining a non-issue. This tracks with the season: local trees like ash, liquidambar, and prunus had their pollen surge back in spring and are now dormant on that front, while weed pollen, often tied to late-summer and fall bloomers, is only lightly present rather than ramping up. For now, conditions favor easy breathing outdoors.

What to do today

  • Pollen levels are very low right now. It's a great day to enjoy the outdoors!

Tree map

Every dot is a tree near Berkeley, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.

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Top tree-pollen sources

The local tree genera behind today's pollen near Berkeley. Each bar is that genus's share of the tree pollen.

323 pollen-relevant trees nearby drive today's tree-pollen reading.

Meet the trees near you

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

Plane

Plane

Platanus acerifolia

Allergenicity 4/4Blooms spring
Cherry

Cherry

Prunus L.

Allergenicity 1/4Blooms spring
Sweetgum

Sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring
Pear

Pear

Pyrus calleryana

Allergenicity 1/4Blooms spring
Ash

Ash

Fraxinus

Allergenicity 4/4Blooms spring
Pear

Pear

Pyrus kawakamii

Allergenicity 1/4Blooms spring
Maple

Maple

Acer L.

Allergenicity 3/4Blooms spring
Ligustrum

Ligustrum

Ligustrum japonicum

Allergenicity 2/4Blooms spring
Hackberry

Hackberry

Celtis L.

Allergenicity 3/4Blooms spring
Cherry

Cherry

Prunus serrulata

Allergenicity 1/4Blooms spring
Maple

Maple

Acer macrophyllum

Allergenicity 3/4Blooms spring
Cypress

Cypress

Cupressus sempervirens

Allergenicity 4/4Blooms winter,spring
Maple

Maple

Acer rubrum

Allergenicity 3/4Blooms spring
Cypress

Cypress

Cupressus

Allergenicity 4/4Blooms winter,spring
Ligustrum

Ligustrum

Ligustrum lucidum

Allergenicity 2/4Blooms spring
Poplar

Poplar

Populus nigra

Allergenicity 3/4Blooms spring

Common questions

What is the pollen count in Berkeley, CA today?
Berkeley, CA is at a very low 1 out of 5 on the Universal Pollen Index today, driven mainly by grass pollen. The five-day outlook holds steady around 1 of 5.
Is grass pollen high in Berkeley, CA right now?
Grass pollen is very low today at 1 of 5, and it's past its peak season. Most people won't notice it.
What plants are causing allergies in Berkeley, CA?
The main sources right now are Ash, Liquidambar, Tristaniopsis, Pittosporum, and Prunus.