AutoCamp Sonoma, Guerneville Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (11 October) pollen in AutoCamp Sonoma, Guerneville is moderate; mold (cladosporium) is moderate; mold (alternaria) is low.
Pollen Tomorrow
Tomorrow (12 October 2026) mold (alternaria) remains low, mold (cladosporium) declining, ragweed at low levels.
7-Day Trend
Over the next week grass, mugwort, ragweed, mold (alternaria), and mold (cladosporium) will increase.
Explore Forecasts
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Pollen Risk
Today - 11 October
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | None | 0/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | None | 0/100 |
| Mold (Alternaria) | Low | 12/100 |
| Mold (Cladosporium) | Moderate | 27/100 |
Tomorrow - 12 October
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | — |
| Grass (Poaceae) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 3/100 | |
| Mold (Alternaria) | Low | 9/100 | |
| Mold (Cladosporium) | Low | 21/100 |
Local Environmental Conditions
The area around this part of Guerneville is heavily wooded. Lawns and planted trees in a nearby park add to local grass and tree pollen. Of the allergenic trees nearby, hazel matters most, while maple also contributes. Beyond the trees, grasses matter a great deal, and plantain and mugwort are the main weed sources.
Hazel opens the pollen season in early spring. Maple follows in mid-spring, as temperatures climb to around 10°C, and tree pollen reaches its peak. Grasses take over in midsummer, with temperatures around 20°C, and their pollen lingers into early fall. Later, plantain and mugwort keep weed pollen in the air from late spring into early fall.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Pollen forecast neighborhoods 3 neighborhoods
Frequently Asked Questions About Pollen in California
Is pollen high in Guerneville right now?
Currently, there is no significant pollen in Guerneville.
Will pollen levels change in Guerneville tomorrow?
On 12 October 2026, pollen conditions in Guerneville will be different from today, with ambrosia at low levels
Is pollen expected to decrease in Guerneville this week?
According to the five-day outlook, artemisia, grass, and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Guerneville?
On 11 October 2026, there are no significant pollen types in Guerneville.
When is pollen season in Guerneville?
How often is the Guerneville pollen forecast updated?
The Guerneville pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Guerneville come from nearby or far away?
Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.
Are pollen levels in Guerneville based on measurements or forecasts?
Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.
Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Guerneville, modern forecasts combine recent measurements, weather data, and information about local vegetation.
This allows us to estimate pollen levels for today and the coming days, not just report the past.
Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.
Understanding the Scale
The 0–100 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
Get More in the Airmine Pollen app
Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
