
Ornamental pear
Pyrus calleryana
Very low today, mostly weed pollen.
Last updated August 15, 2026
Pollen levels around Stockton are quiet today. Tree pollen is absent entirely, and weeds are registering only a faint presence, unlikely to cause much trouble even for those who are usually sensitive. Overall, this is a low-impact day for allergy sufferers. Looking ahead, tree pollen should remain out of the picture through the next several days, which fits the season, since trees like liquidambar, ligustrum, and crape myrtle typically finish their pollen release well before late summer. Weed pollen, on the other hand, is expected to inch upward gradually over the coming days, moving from very low toward a more noticeable level. This gentle rise is typical for mid-August, as weeds begin their seasonal push ahead of the more pronounced late-summer and fall allergy period.
Every dot is a tree near Stockton, 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 Stockton. Each bar is that genus's share of the tree pollen.
5,874 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Stockton: what each looks like, how allergenic it is, and when it blooms.

Ornamental pear
Pyrus calleryana

Chinese hackberry
Celtis sinensis

London plane tree
Platanus acerifolia

Maidenhair tree
Ginkgo biloba

Red maple
Acer rubrum

Leaf plum purple
Prunus cerasifera

American sweetgum
Liquidambar styraciflua

Leaf zelkova saw
Zelkova serrata

Raywood ash
Fraxinus oxycarpa

Leaf linden little
Tilia cordata

Holly oak
Quercus ilex

White birch
Betula pendula

Italian cypress
Cupressus sempervirens

Scarlet oak
Quercus coccinea

Red oak
Quercus rubra

Evergreen pear
Pyrus kawakamii