Pollen in Rancho Cucamonga, CA

About pollen in Rancho Cucamonga

Pollen counts across Rancho Cucamonga are quiet today, with tree pollen sitting at essentially none. Anyone sensitive to airborne allergens should find the air calm, with little to trigger the usual sneezing or itchy eyes typically associated with tree sources like crape myrtle (Lagerstroemia), golden rain tree (Koelreuteria), redbud (Cercis), citrus, or Washingtonia palms. Looking ahead, conditions are expected to remain low, with no notable rise in tree pollen anticipated over the next few days. This tracks with the season, since local trees typically release their heaviest pollen in spring, well before late July. For now, residents can expect a comfortable stretch with minimal allergy irritation from trees, and it's worth keeping an eye out as summer progresses into the weedier months ahead.

What to do today

• Pollen is minimal today, so it's a great time to be outside.
• No special pollen precautions are needed right now.

Tree map

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

Meet the trees near you

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

London plane

Platanus acerifolia

Allergenicity 4/4Blooms spring

Canary island pine

Pinus canariensis

Allergenicity 1/4Blooms spring

American sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring

Glossy privet

Ligustrum lucidum

Allergenicity 2/4Blooms spring

Leaf plum purple

Prunus cerasifera

Allergenicity 1/4Blooms spring

Ornamental pear

Pyrus calleryana

Allergenicity 1/4Blooms spring

Evergreen pear

Pyrus kawakamii

Allergenicity 1/4Blooms spring

Tulip tree

Liriodendron tulipifera

Allergenicity 1/4Blooms spring

Aleppo pine

Pinus halepensis

Allergenicity 1/4Blooms spring

Chinese elm

Ulmus parvifolia

Allergenicity 3/4Blooms spring

White alder

Alnus rhombifolia

Allergenicity 4/4Blooms winter,spring

Holly oak

Quercus ilex

Allergenicity 4/4Blooms spring

Italian stone pine

Pinus pinea

Allergenicity 1/4Blooms spring

Arizona ash

Fraxinus velutina

Allergenicity 4/4Blooms spring

Purple robe locust

Robinia pseudoacacia

Allergenicity 2/4Blooms spring

White mulberry

Morus alba

Allergenicity 5/4Blooms spring

Common questions

What is the pollen count in Rancho Cucamonga, CA today?

Rancho Cucamonga, CA has no notable tree, grass, or weed pollen today.

What plants are causing allergies in Rancho Cucamonga, CA?

The main sources right now are Lagerstroemia, Koelreuteria, Cercis, Citrus, and Washingtonia.