Walden West Outdoor School, Saratoga Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (11 October) pollen in Walden West Outdoor School, Saratoga is low; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (12 October 2026) mold (alternaria) remains low, mold (cladosporium) remains low, grass at low levels, mugwort at low levels, ragweed at low levels.
7-Day Trend
Over the next week mold (alternaria) and mold (cladosporium) will increase; grass and ragweed will decrease; mugwort will remain stable.
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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 | 7/100 |
| Mold (Cladosporium) | Low | 20/100 |
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) | Low | 10/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 9/100 | |
| Ragweed (Ambrosia) | Low | 21/100 | |
| Mold (Alternaria) | Low | 9/100 | |
| Mold (Cladosporium) | Low | 23/100 |
Local Environmental Conditions
Around 96% of the area near this location in Saratoga is woodland. The leading allergenic tree nearby is oak, with maple close behind. Grasses and weeds such as mugwort and plantain round out the local mix. Oak is unusually common here compared with most other locations, making it a particularly important local pollen source.
Tree pollen peaks in mid-spring, when the weather warms to around 10°C and oak and maple are in full flower. Grasses take over in early summer, with temperatures around 20°C, and their pollen lingers into early fall. Mugwort and plantain bring a final peak through summer. The oak period in mid-spring is usually the most intense time of year here.
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Frequently Asked Questions About Pollen in California
Is pollen high in Saratoga right now?
Currently, there is no significant pollen in Saratoga.
Will pollen levels change in Saratoga tomorrow?
On 12 October 2026, pollen conditions in Saratoga will be different from today, with ambrosia at low levels, artemisia at low levels, grass at low levels
Is pollen expected to decrease in Saratoga this week?
According to the five-day outlook, ambrosia and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Saratoga?
On 11 October 2026, there are no significant pollen types in Saratoga.
When is pollen season in Saratoga?
How often is the Saratoga pollen forecast updated?
The Saratoga pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Saratoga 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 Saratoga 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 Saratoga, 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).
