
London planetree
Platanus acerifolia
Very low today, mostly weed pollen.
Last updated September 29, 2026
Pollen levels in Corona are quiet today. Tree pollen is absent entirely, and weeds are registering only a very slight presence. Most people, even those with sensitivities, should notice little to no effect from pollen today. Looking ahead, weed pollen is expected to tick up slightly over the next several days, moving from very low into the low-to-moderate range, where it may become noticeable for those who are especially sensitive. This lines up with the seasonal pattern, as weeds such as ragweed remain the main source of pollen through the fall. Tree pollen should stay quiet for now, with local species like oak, willow, and cherry not expected to become active again until closer to spring.
Every dot is a tree near Corona, 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 Corona. Each bar is that genus's share of the tree pollen.
908 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Corona: what each looks like, how allergenic it is, and when it blooms.

London planetree
Platanus acerifolia

Honeylocust
Gleditsia triacanthos

Cherry
Prunus

Pin oak
Quercus palustris

Callery pear
Pyrus calleryana

Japanese zelkova
Zelkova serrata

Norway maple
Acer platanoides

Sophora
Styphnolobium japonicum

American linden
Tilia americana

Swamp white oak
Quercus bicolor

Sweetgum
Liquidambar styraciflua

Ginkgo
Ginkgo biloba

Littleleaf linden
Tilia cordata

Green ash
Fraxinus pennsylvanica

Kentucky coffeetree
Gymnocladus dioicus

Leaf plum purple
Prunus cerasifera