
Plane
Platanus acerifolia
Very low today, mostly grass pollen.
Last updated September 28, 2026
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.
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.
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.
Get to know the tree types growing around Berkeley: what each looks like, how allergenic it is, and when it blooms.

Plane
Platanus acerifolia

Cherry
Prunus L.

Sweetgum
Liquidambar styraciflua

Pear
Pyrus calleryana

Ash
Fraxinus

Pear
Pyrus kawakamii

Maple
Acer L.

Ligustrum
Ligustrum japonicum

Hackberry
Celtis L.

Cherry
Prunus serrulata

Maple
Acer macrophyllum

Cypress
Cupressus sempervirens

Maple
Acer rubrum

Cypress
Cupressus

Ligustrum
Ligustrum lucidum

Poplar
Populus nigra