Big Slide Campground, Willow Creek Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (6 October) pollen in Big Slide Campground, Willow Creek is low; mugwort, ragweed, mold (alternaria), and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (7 October 2026) mugwort remains low, ragweed remains low, mold (alternaria) remains low, mold (cladosporium) remains low, grass at low levels.
7-Day Trend
Over the next week grass and mold (cladosporium) will increase; mugwort, ragweed, and mold (alternaria) will decrease.
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Pollen Risk
Today - 6 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) | Low | 4/100 |
| Ragweed (Ambrosia) | Low | 6/100 |
| Alternaria | Low | 17/100 |
| Cladosporium | Low | 18/100 |
Tomorrow - 7 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 | 1/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 9/100 | |
| Ragweed (Ambrosia) | Low | 11/100 | |
| Alternaria | Low | 18/100 | |
| Cladosporium | Low | 17/100 |
Local Environmental Conditions
The landscape around this part of Willow Creek is heavily wooded. The damp ground beside a stream or river nearby supports trees, shrubs and reeds, adding to local pollen. Locally, tree cover makes trees an important source. Undergrowth, clearings and woodland edges add smaller amounts of grass and herb pollen.
The year opens with tree pollen, which is highest around mid-spring. Grass pollen builds from mid-spring, peaks around early summer and stays noticeable until late summer. Later, weeds flowering on open and disturbed ground keep some pollen in the air from early summer into early fall. Here, temperatures range from around 10°C in the coldest month to around 15°C in the warmest, with most rain falling in the cooler months.
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Frequently Asked Questions About Pollen in California
Is pollen high in Willow Creek right now?
On 6 October 2026, overall pollen levels in Willow Creek are low. Ambrosia is the main contributor to airborne pollen, while artemisia remain at lower levels
Will pollen levels change in Willow Creek tomorrow?
On 7 October 2026, pollen conditions in Willow Creek will be different from today, with ambrosia at low levels, artemisia at low levels, grass at low levels
Is pollen expected to decrease in Willow Creek this week?
According to the five-day outlook, ambrosia and artemisia pollen levels are expected to gradually decrease, while grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Willow Creek?
On 6 October 2026, Ambrosia is the dominant pollen source in Willow Creek. artemisia are also present but at lower levels. grass are not currently active.
When is pollen season in Willow Creek?
How often is the Willow Creek pollen forecast updated?
The Willow Creek pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Willow Creek 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 Willow Creek 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 Willow Creek, 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).
