
Cottonwood
Populus
Moderate today, mostly grass pollen.
Last updated July 1, 2026
Grass pollen is the main driver in Detroit today, sitting at a moderate level on the Universal Pollen Index, while tree pollen has dropped back to low. Looking ahead, grass is expected to hold steady at moderate over the next four days before easing slightly toward the end of the forecast window, and tree pollen should stay low throughout. This pattern fits the season: late June typically brings the early-summer grass peak, while the spring surge from local trees like Oak, Elm, Honeylocust, Cladrastis, and Amelanchier has largely wound down. Weed pollen data isn't available right now, though ragweed concerns generally arrive later, in late summer and fall. For now, grass remains the type to watch.
Every dot is a tree near Detroit, 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 Detroit. Each bar is that genus's share of the tree pollen.
145 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Detroit: what each looks like, how allergenic it is, and when it blooms.

Cottonwood
Populus

Willow
Salix

Swamp white oak
Quercus bicolor

Common hackberry
Celtis occidentalis

Higan cherry
Prunus subhirtella

Bloodgood london planetree
Platanus acerifolia

Bur oak
Quercus macrocarpa

Red maple
Acer rubrum

Japanese zelkova
Zelkova serrata

Elm
Ulmus

Tulip tree
Liriodendron tulipifera

Northern red oak
Quercus rubra

Autumn gold ginkgo biloba
Ginkgo biloba

London planetree
Platanus acerifolia

Kentucky coffeetree
Gymnocladus dioicus

River birch
Betula nigra