
Chinese elm
Ulmus parvifolia
Low today, mostly grass pollen.
Last updated July 1, 2026
Grass pollen is the main driver in Westminster today, sitting at a Low level (2) and pacing the overall index, which also reads Low. Tree pollen is barely a factor right now, registering Very Low (1), with the area's typical contributors like Oak, Tristaniopsis, Rhus, Geijera, and Melaleuca staying quiet. The five-day grass forecast holds steady at Low across the board, so expect little change in the days ahead. That flat, grass-led pattern fits late June, when spring tree pollen has tapered off and grasses tend to dominate early summer. Ragweed and other weeds are not reported in today's data, which is consistent with this time of year before the late-summer weed season.
Every dot is a tree near Westminster, 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 Westminster. Each bar is that genus's share of the tree pollen.
710 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Westminster: what each looks like, how allergenic it is, and when it blooms.

Chinese elm
Ulmus parvifolia

Canary island pine
Pinus canariensis

Acer paxii
Acer paxii

Evergreen pear
Pyrus kawakamii

Sawtooth zelkova
Zelkova serrata

Holly oak
Quercus ilex

American sweetgum
Liquidambar styraciflua

London plane
Platanus acerifolia

Honey locust
Gleditsia triacanthos

Tulip tree
Liriodendron tulipifera

Maidenhair tree
Ginkgo biloba

Hollywood juniper
Juniperus chinensis

Italian cypress
Cupressus sempervirens

Shamel ash
Fraxinus uhdei

White mulberry
Morus alba

Leaf plum purple
Prunus cerasifera