Low Pollen in St. Louis, MO

About pollen in St. Louis

Weed pollen is the main story in St. Louis today, though even that is holding at a low level. Tree pollen is barely registering, so those sensitive to maple, ash, elm, celtis, or plane can expect little trouble from that front. Overall, this is a mild day for allergy sufferers, with only mild irritation likely for those who react strongly to weeds. Looking ahead, tree pollen should stay quiet through the coming days, which fits the season since local trees typically shed most of their pollen in spring rather than late summer. Weed pollen, on the other hand, is expected to inch upward, moving from a low to a more moderate presence by the end of the five-day stretch. This gradual rise lines up with the time of year, as ragweed and other late-summer weeds begin to build toward their more active fall stretch.

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 St. Louis, 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 St. Louis. Each bar is that genus's share of the tree pollen.

Meet the trees near you

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

Red maple

Acer rubrum

Allergenicity 3/4Blooms spring

Green ash

Fraxinus pennsylvanica

Allergenicity 4/4Blooms spring

Callery pear

Pyrus calleryana

Allergenicity 1/4Blooms spring

Pin oak

Quercus palustris

Allergenicity 4/4Blooms spring

Littleleaf linden

Tilia cordata

Allergenicity 2/4Blooms summer

Sugar maple

Acer saccharum

Allergenicity 3/4Blooms spring

Freeman maple

Acer freemanii

Allergenicity 3/4Blooms spring

Silver maple

Acer saccharinum

Allergenicity 3/4Blooms spring

White ash

Fraxinus americana

Allergenicity 4/4Blooms spring

American sycamore

Platanus occidentalis

Allergenicity 4/4Blooms spring

Thornless honeylocust

Gleditsia triacanthos

Allergenicity 2/4Blooms spring

London planetree

Platanus acerifolia

Allergenicity 4/4Blooms spring

Cherry/plum

Prunus

Allergenicity 1/4Blooms spring

Sweetgum

Liquidambar styraciflua

Allergenicity 2/4Blooms spring

Hybrid elm

Ulmus

Allergenicity 3/4Blooms spring

Ginkgo

Ginkgo biloba

Allergenicity 1/4Blooms spring

Common questions

What is the pollen count in St. Louis, MO today?

St. Louis, MO 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 2 to 3 of 5.

Is weed pollen high in St. Louis, MO right now?

Weed 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 St. Louis, MO?

The main sources right now are Maple, Ash, Elm, Celtis, and Plane.