
Black locust
Robinia pseudoacacia
Very low today, mostly grass pollen.
Last updated July 21, 2026
Pollen levels in San Pedro are quite mild today. Grass is the only pollen type showing any activity, and even that is at a very low level, so most people should not notice any effects. Tree pollen is absent entirely, keeping overall conditions calm for anyone sensitive to seasonal allergens. Looking ahead, grass pollen is expected to hold steady at this same low level over the next several days, with no signs of a meaningful increase. This fits the seasonal pattern for midsummer, as trees like Pittosporum, Ash, Pine, Araucaria, and Washingtonia have largely finished their pollen release for the year. With tree pollen quiet and grass staying subdued, conditions should remain comfortable for those who typically deal with allergy symptoms this time of year.
Every dot is a tree near San Pedro, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.
The local tree genera behind today's pollen near San Pedro. Each bar is that genus's share of the tree pollen.
13 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around San Pedro: what each looks like, how allergenic it is, and when it blooms.

Black locust
Robinia pseudoacacia

Bradford pear
Pyrus calleryana

Oak species
Quercus

Chinese evergreen elm
Ulmus parvifolia

Shamel ash
Fraxinus uhdei

Hollywood twisted juniper
Juniperus

Canary island pine
Pinus canariensis

Olive
Olea europaea

American sweetgum
Liquidambar styraciflua

Italian cypress
Cupressus sempervirens

Pine species
Pinus

Leaf plum purple
Prunus pissardii

London plane
Platanus acerifolia

Siberian elm
Ulmus pumila

Aleppo pine
Pinus halepensis

White mulberry
Morus alba