
London planetree
Platanus acerifolia
Low today, mostly grass pollen.
Last updated July 1, 2026
Grass is the main player in Richmond Hill today, sitting at a Low level (2) and edging out tree pollen, which has dropped to Very Low (1). The forecast holds steady, with grass expected to remain at that same Low reading through the next five days. This tracks with the season, as the spring surge from trees like Oak, Maple, Plane, Honeylocust, and Birch has largely faded while grass pollen settles into its typical late-spring and early-summer presence. Overall conditions are Low (2) for now, so expect more of the same in the days ahead.
Every dot is a tree near Richmond Hill, 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 Richmond Hill. Each bar is that genus's share of the tree pollen.
1,082 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Richmond Hill: what each looks like, how allergenic it is, and when it blooms.

London planetree
Platanus acerifolia

Callery pear
Pyrus calleryana

Cherry
Prunus

Honeylocust
Gleditsia triacanthos

Pin oak
Quercus palustris

Norway maple
Acer platanoides

Littleleaf linden
Tilia cordata

Red maple
Acer rubrum

Chokecherry
Prunus virginiana

Crimson king maple
Acer platanoides

Japanese zelkova
Zelkova serrata

Leaf plum purple
Prunus cerasifera

Sophora
Styphnolobium japonicum

Silver maple
Acer saccharinum

Ginkgo
Ginkgo biloba

American linden
Tilia americana