Moderate Pollen in Pomona, CA

About pollen in Pomona

Weed pollen is the main story in Pomona today, sitting at a moderate level that sensitive individuals will likely notice. Grass pollen is present but very low, unlikely to cause much trouble, and tree pollen is quiet for now. Looking ahead, this pattern is expected to hold steady over the next several days, with weed pollen remaining the primary concern at a moderate level and grass staying minimal. This tracks with the season, as tree pollen from species like Albizia, Tristaniopsis, Pyrus, Maple, and Hickory typically winds down well before fall, while weeds such as ragweed tend to peak this time of year. Anyone sensitive to late-season weed pollen should expect conditions to stay fairly consistent through the week.

What to do today

• It's important to shower and wash your hair after spending a lot of time outdoors.
• When spending time outside, use sunglasses and a cap to keep pollen out of your face and eyes.
• Wash clothes worn outdoors to remove any remnants of pollen grains.
• If possible, wear glasses instead of contact lenses.
• Did you hang any laundry outside? Now is a good time to hang clothes indoors or use a dryer if possible.

Tree map

Every dot is a tree near Pomona, 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 Pomona. Each bar is that genus's share of the tree pollen.

Meet the trees near you

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

Canary island pine

Pinus canariensis

Allergenicity 1/4Blooms spring

London plane bloodgood

Platanus acerifolia

Allergenicity 4/4Blooms spring

Ornamental pear

Pyrus calleryana

Allergenicity 1/4Blooms spring

Leaf plum purple

Prunus cerasifera

Allergenicity 1/4Blooms spring

American sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring

White alder

Alnus rhombifolia

Allergenicity 4/4Blooms winter,spring

Glossy privet

Ligustrum lucidum

Allergenicity 2/4Blooms spring

Evergreen pear

Pyrus kawakamii

Allergenicity 1/4Blooms spring

Silver maple

Acer saccharinum

Allergenicity 3/4Blooms spring

London plane

Platanus acerifolia

Allergenicity 4/4Blooms spring

Chinese hackberry

Celtis sinensis

Allergenicity 3/4Blooms spring

California sycamore

Platanus racemosa

Allergenicity 4/4Blooms spring

Tulip tree

Liriodendron tulipifera

Allergenicity 1/4Blooms spring

Chinese elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

Shamel ash

Fraxinus uhdei

Allergenicity 4/4Blooms spring

Honey locust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring

Common questions

What is the pollen count in Pomona, CA today?

Pomona, CA is at a moderate 3 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. The five-day outlook holds steady around 3 of 5.

Is weed pollen high in Pomona, CA right now?

Weed pollen is moderate today at 3 of 5, and it's in season now. Sensitive people may notice symptoms.

What plants are causing allergies in Pomona, CA?

The main sources right now are Albizia, Tristaniopsis, Pyrus, Maple, and Hickory. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.