Low Pollen in Los Angeles, CA

About pollen in Los Angeles

Weeds are the most active pollen source in Los Angeles today, though levels remain low enough that most people won't notice much effect. Grass pollen is present but only barely, sitting at a very low level, while tree pollen is absent entirely. Overall, this is a quiet day for allergy sufferers across the region. Looking ahead, this pattern is expected to hold steady over the next few days. Weeds may ease slightly toward the low end as the week progresses, grass will stay at a consistently minor level, and trees are likely to remain dormant for now. This lines up with the seasonal calendar — local trees like Grevillea, Brachychiton, Podocarpus, Eucalyptus, and Pyrus typically release their pollen in spring, so their inactivity this time of year is expected. Late September falls in a lull between grass season and the tail end of weed season, which explains why weeds, tied to late-summer and fall growth, are the main thing worth keeping an eye on right now.

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 Los Angeles, 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 Los Angeles. Each bar is that genus's share of the tree pollen.

Meet the trees near you

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

London plane

Platanus acerifolia

Allergenicity 4/4Blooms spring

Chinese evergreen elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

Oak species

Quercus

Allergenicity 4/4Blooms spring

American sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring

Glossy privet

Ligustrum lucidum

Allergenicity 2/4Blooms spring

Siberian elm

Ulmus pumila

Allergenicity 3/4Blooms spring

California sycamore

Platanus racemosa

Allergenicity 4/4Blooms spring

Italian cypress

Cupressus sempervirens

Allergenicity 4/4Blooms winter,spring

Modesto ash

Fraxinus velutina

Allergenicity 4/4Blooms spring

Japanese black pine

Pinus thunbergiana

Allergenicity 1/4Blooms spring

Leaf plum purple

Prunus pissardii

Allergenicity 1/4Blooms spring

Evergreen pear

Pyrus kawakamii

Allergenicity 1/4Blooms spring

Arizona ash

Fraxinus velutina

Allergenicity 4/4Blooms spring

Holly oak

Quercus ilex

Allergenicity 4/4Blooms spring

Shamel ash

Fraxinus uhdei

Allergenicity 4/4Blooms spring

Western catalpa

Catalpa speciosa

Allergenicity 2/4Blooms spring

Common questions

What is the pollen count in Los Angeles, CA today?

Los Angeles, CA is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 1 to 2 of 5.

Is weed pollen high in Los Angeles, 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 Los Angeles, CA?

The main sources right now are Grevillea, Brachychiton, Podocarpus, Eucalyptus, and Pyrus. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.