
Italian cypress
Cupressus sempervirens
Moderate today, mostly weed pollen.
Last updated September 29, 2026
Weed pollen is the main driver of today's conditions in Arden-Arcade, sitting at a moderate level that could be noticeable for those who tend to react to it. Tree pollen is essentially quiet right now, and grass pollen is barely registering, so most of the day's allergy-related discomfort, if any, will trace back to weeds. Looking ahead, this pattern is expected to hold steady over the next several days, with weed pollen staying moderate and grass remaining very low. This fits the season well, since early fall is typically when weeds such as ragweed become the primary allergen, while local trees like alder, oak, mulberry, and the ornamental malus and pyrus varieties have long since finished their spring pollen release and stay dormant this time of year.
Every dot is a tree near Arden-Arcade, 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 Arden-Arcade. Each bar is that genus's share of the tree pollen.
209 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Arden-Arcade: what each looks like, how allergenic it is, and when it blooms.

Italian cypress
Cupressus sempervirens

Red maple
Acer rubrum

Northern hackberry
Celtis occidentalis

Maple
Acer

Silver maple
Acer saccharinum

Trident maple
Acer buergerianum

Chinese hackberry
Celtis sinensis

Velvet ash
Fraxinus velutina

Japanese maple
Acer palmatum

European white birch
Betula pendula

Boxelder
Acer negundo

White alder
Alnus rhombifolia

Norway maple
Acer platanoides

Monterey cypress
Cupressus macrocarpa

European ash
Fraxinus excelsior

Camphor tree
Cinnamomum camphora