Low Pollen in Pomona, CA

Low today, mostly grass pollen.

Last updated July 1, 2026

Today's index2out of 5Low
TreeNone
GrassLowoff-season

Driving it today

AlbiziaAlbiziaTristaniopsisTristaniopsisPyrusPyrusMapleAcerHickoryCarya

Forecast

Thu
2
Fri
2
Sat
2
Sun
2

About pollen in Pomona

Grass pollen is the main driver in Pomona today, sitting at a Low level on the index, while the overall reading also registers Low at 2. Tree pollen is currently at None, so local species like Maple, Tristaniopsis, Hickory, Albizia, and Washingtonia are contributing little to the air right now. The five-day forecast holds grass steady at the same Low level throughout, suggesting no notable change in the days ahead. This tracks with the season, as grasses tend to be the dominant source through late spring and early summer while tree pollen has tapered off from its springtime peak. Weed pollen data isn't available at this time.

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 Pomona, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.

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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.

9 pollen-relevant trees nearby drive today's tree-pollen reading.

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

Canary island pine

Pinus canariensis

Allergenicity 1/4Blooms spring
London plane bloodgood

London plane bloodgood

Platanus acerifolia

Allergenicity 4/4Blooms spring
Ornamental pear

Ornamental pear

Pyrus calleryana

Allergenicity 1/4Blooms spring
Leaf plum purple

Leaf plum purple

Prunus cerasifera

Allergenicity 1/4Blooms spring
American sweetgum

American sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring
White alder

White alder

Alnus rhombifolia

Allergenicity 4/4Blooms winter,spring
Glossy privet

Glossy privet

Ligustrum lucidum

Allergenicity 2/4Blooms spring
Evergreen pear

Evergreen pear

Pyrus kawakamii

Allergenicity 1/4Blooms spring
Silver maple

Silver maple

Acer saccharinum

Allergenicity 3/4Blooms spring
London plane

London plane

Platanus acerifolia

Allergenicity 4/4Blooms spring
Chinese hackberry

Chinese hackberry

Celtis sinensis

Allergenicity 3/4Blooms spring
California sycamore

California sycamore

Platanus racemosa

Allergenicity 4/4Blooms spring
Tulip tree

Tulip tree

Liriodendron tulipifera

Allergenicity 1/4Blooms spring
Chinese elm

Chinese elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring
Shamel ash

Shamel ash

Fraxinus uhdei

Allergenicity 4/4Blooms spring
Honey locust

Honey locust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring

Common questions

What is the pollen count in Pomona, CA today?
Pomona, CA is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by grass pollen. The five-day outlook holds steady around 2 of 5.
Is grass pollen high in Pomona, CA right now?
Grass pollen is low today at 2 of 5, and it's past its peak season. Most people won't have symptoms.
What plants are causing allergies in Pomona, CA?
The main sources right now are Albizia, Tristaniopsis, Pyrus, Maple, and Hickory.