Low Pollen in Fullerton, CA

About pollen in Fullerton

Weed pollen is the most active type in Fullerton today, though it remains at a low level that most people should be able to tolerate without much trouble. Grass pollen is present as well but at a very low level, essentially a minor background presence. Tree pollen is absent entirely, so anyone sensitive to trees like Geijera, Ficus, Jacaranda, Pistacia, or Lagerstroemia can expect an easy day on that front. Looking ahead, conditions are expected to hold steady through the next several days, with weed pollen staying low and grass remaining very low, and tree pollen continuing to register as none. This pattern fits the season well: late September falls within the typical window for weed pollen, including ragweed, to be modestly active in Southern California, while local tree species have already finished their spring release and grasses have wound down from their late-spring peak. Overall, this is a comparatively calm stretch for allergy sufferers in the area.

What to do today

• It's a good day for outdoor activities since pollen levels are low.
• Do you know which plants cause your pollen allergy? Check out the pollen data to be prepared.

Tree map

Every dot is a tree near Fullerton, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.

Top tree-pollen sources

The local tree genera behind today's pollen near Fullerton. Each bar is that genus's share of the tree pollen.

Meet the trees near you

Get to know the tree types growing around Fullerton: what each looks like, how allergenic it is, and when it blooms.

Canary island pine

Pinus canariensis

Allergenicity 1/4Blooms spring

London plane

Platanus acerifolia

Allergenicity 4/4Blooms spring

Holly oak

Quercus ilex

Allergenicity 4/4Blooms spring

Maidenhair tree

Ginkgo biloba

Allergenicity 1/4Blooms spring

Chinese elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

Honey locust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring

Leaf plum purple

Prunus cerasifera

Allergenicity 1/4Blooms spring

Alamo mexican sycamore

Platanus mexicana

Allergenicity 4/4Blooms spring

Tulip tree

Liriodendron tulipifera

Allergenicity 1/4Blooms spring

Hollywood juniper

Juniperus chinensis

Allergenicity 5/4Blooms winter,spring

American sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring

Japanese black pine

Pinus thunbergiana

Allergenicity 1/4Blooms spring

Evergreen pear

Pyrus kawakamii

Allergenicity 1/4Blooms spring

Acer paxii

Acer paxii

Allergenicity 3/4Blooms spring

Ginkgo autumn gold

Ginkgo biloba

Allergenicity 1/4Blooms spring

White poplar

Populus alba

Allergenicity 3/4Blooms spring

Common questions

What is the pollen count in Fullerton, CA today?

Fullerton, CA is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. The five-day outlook holds steady around 2 of 5.

Is weed pollen high in Fullerton, CA right now?

Weed pollen is low today at 2 of 5, and it's in season now. Most people won't have symptoms.

What plants are causing allergies in Fullerton, CA?

The main sources right now are Washingtonia, Syagrus, Cupaniopsis, Melaleuca, and Maple. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.