
London planetree
Platanus acerifolia
Very low today, mostly grass pollen.
Last updated July 20, 2026
Pollen levels across Richmond Hill are quiet today. Tree pollen is absent, and grass pollen is running very low, so most people should notice little to no effect even if they tend to be sensitive. Overall, this is an easy day for anyone who typically deals with seasonal allergies. Looking ahead, conditions are expected to hold steady over the next stretch, with tree pollen staying flat and grass pollen remaining at a similarly low level. This lines up with the season, as the spring push from trees like Plane, Maple, Pyrus, Linden, and Oak has long since passed, and grasses are now tapering off after their late-spring and early-summer peak. Ragweed season is still a ways off, so for now the air remains largely calm for allergy sufferers.
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