Low Pollen in Rancho Cucamonga, CA

About pollen in Rancho Cucamonga

Grass pollen is the main driver in Rancho Cucamonga today, sitting at a moderate level (3) and pushing the overall index to moderate as well. Tree pollen has dropped off to very low (1), so the local plane, jacaranda, Cupaniopsis, Syagrus, and Rhus trees are contributing little at this point. The five-day grass forecast holds in the moderate range, easing slightly to 2 on a couple of days before nudging back up, so expect steady conditions rather than any sharp swing. This fits the season, with grass typically leading the way in late spring and early summer after the springtime peak in tree pollen has passed. Weed pollen has no data available, though ragweed generally becomes a factor later in summer and into fall.

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 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 is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by grass pollen. Over the next five days it ranges from 2 to 3 of 5.

Is grass pollen high in Rancho Cucamonga, 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 Rancho Cucamonga, CA?

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