Low Pollen in Pasadena, CA

About pollen in Pasadena

Tree pollen is the only category active in Pasadena today, and it remains on the low side. Most people should get through the day without much irritation, though those with a strong sensitivity to tree pollen may notice mild effects, particularly if spending extended time outdoors near mature plantings of plane, oak, or Washingtonia palms. Looking ahead, conditions are expected to hold steady at this same low level through the coming days, with no significant swings anticipated. This lull fits the season, as the region's tree pollen output — from sources like oak, Cinnamomum, and Schinus — has largely wound down after its spring peak, leaving summer air relatively calm on that front for now.

What to do today

• Pollen is low today and most people won't have symptoms.
• If you're sensitive, rinse off and change clothes after being outdoors.

Tree map

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

Meet the trees near you

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

London plane

Platanus acerifolia

Allergenicity 4/4Blooms spring

Bradford pear

Pyrus calleryana

Allergenicity 1/4Blooms spring

Chinese evergreen elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

Oak species

Quercus

Allergenicity 4/4Blooms spring

Shamel ash

Fraxinus uhdei

Allergenicity 4/4Blooms spring

Italian cypress

Cupressus sempervirens

Allergenicity 4/4Blooms winter,spring

Chinese elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

Glossy privet

Ligustrum lucidum

Allergenicity 2/4Blooms spring

American sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring

White mulberry

Morus alba

Allergenicity 5/4Blooms spring

Maidenhair tree

Ginkgo biloba

Allergenicity 1/4Blooms spring

Siberian elm

Ulmus pumila

Allergenicity 3/4Blooms spring

Aleppo pine

Pinus halepensis

Allergenicity 1/4Blooms spring

Arizona ash

Fraxinus velutina

Allergenicity 4/4Blooms spring

Japanese black pine

Pinus thunbergiana

Allergenicity 1/4Blooms spring

Monterey pine

Pinus radiata

Allergenicity 1/4Blooms spring

Common questions

What is the pollen count in Pasadena, CA today?

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

Is tree pollen high in Pasadena, CA right now?

Tree pollen is low today at 2 of 5. Most people won't have symptoms.

What plants are causing allergies in Pasadena, CA?

The main sources right now are Plane, Oak, Washingtonia, Cinnamomum, and Schinus.