CA pollen report
Stockton Pollen Report
Stockton sits in the heart of the Central Valley — one of the most productive agricultural regions on Earth, and one of its heaviest pollen producers. Orchard trees and valley oaks drive the spring, grass pollen from pastures and crops buries the summer, and late-season weeds fill the fall. Hot valley air keeps pollen aloft for months.
Collection coming soon to Stockton
PollyMap is actively recruiting a verified local partner in Stockton. Be the first to know — or apply to be the partner.
What drives allergies in Stockton
Trees: orchard trees and valley oak (February – May)
The valley's almond, walnut, and fruit orchards — plus native valley oak (Quercus lobata) — drive a heavy spring season. March and April are the peak.
Grasses: heavy and long (March – July)
Central Valley grasses pollinate heavily through late spring and early summer — one of the most intense grass seasons in the West.
Weeds: ragweed and pigweed (August – October)
Ragweed (Ambrosia) and pigweed fill field margins and canal banks through the fall.
Mold: delta and harvest
Delta humidity and harvest dust keep Alternaria and Cladosporium active through the warm months.
Historical reports
Cities near Stockton
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
What is the pollen count in Stockton today?
PollyMap publishes real, microscope-verified pollen counts for Stockton — measured from physical air samples. The latest report on this page shows current tree, grass, weed, and mold levels.
Is the pollen count high in Stockton right now?
Stockton's worst stretches are March–April (orchard trees, oak), May–June (grasses), and September (weeds). The measured reports on this page show today's actual levels.
When is allergy season in Stockton?
February through October: orchard and native trees in spring, a heavy grass season into early summer, and weeds in the fall.
Why is Central Valley pollen so heavy?
Millions of acres of orchards and grass crops pollinate within weeks of each other, and the valley's geography traps pollen under warm air.
Are you an allergy clinic in Stockton? Claim your territory on PollyMap.
PollyMap is a local authority-building tool for allergy clinics, ENT practices, and any clinic that offers allergy care. By becoming the Official PollyMap Partner for your part of Stockton, your clinic gets credited on real pollen reports, receives ready-to-share weekly content, and becomes the go-to local expert patients trust.
We assign each partner a designated territory within the Stockton metro — like a franchise territory. Stockton has room for multiple partners, but once your area is assigned, it's locked to your clinic.
No clinic has claimed a territory in Stockton yet. The best areas go to the first clinics that sign up — once one does, that part of town is off the table for everyone else.
Stockton, Lodi, Tracy, and Manteca each make natural PollyMap territories. The first allergy clinic in each area becomes its credited pollen expert.
- Your clinic credited on every Stockton pollen report
- Weekly real-sample reports and ready-to-share content under your brand
- Locked territory — competing clinics can't claim your area
- Become the go-to allergy expert in your part of Stockton