
London plane
Platanus acerifolia
Moderate today, mostly weed pollen.
Last updated September 29, 2026
Weed pollen is the main story in Glendale today, sitting at a moderate level that could be noticeable if you're prone to allergies. Grass is present but only at a very low level, and tree pollen is quiet with essentially nothing in the air right now. Looking ahead, weed pollen is expected to ease slightly over the next several days but should remain at a moderate level worth keeping in mind, while grass stays steady at its current low level. Tree pollen should continue to be absent, which fits the season — trees like magnolia, eucalyptus, acacia, Washingtonia palm, and liquidambar typically release their pollen in spring, not now. This time of year, in late September, weeds are the more common source of irritation as they move through their late-season peak.
Every dot is a tree near Glendale, 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 Glendale. Each bar is that genus's share of the tree pollen.
30 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Glendale: what each looks like, how allergenic it is, and when it blooms.

London plane
Platanus acerifolia

Bradford pear
Pyrus calleryana

Italian cypress
Cupressus sempervirens

Evergreen pear
Pyrus kawakamii

Shamel ash
Fraxinus uhdei

Chinese evergreen elm
Ulmus parvifolia

California sycamore
Platanus racemosa

American sweetgum
Liquidambar styraciflua

Canary island pine
Pinus canariensis

Oak species
Quercus

Glossy privet
Ligustrum lucidum

Chinese elm
Ulmus parvifolia

White mulberry
Morus alba

Japanese black pine
Pinus thunbergiana

Monterey pine
Pinus radiata

Leaf plum purple
Prunus pissardii