China Hole Camp, San Martin Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (6 October) pollen in China Hole Camp, San Martin is moderate; grass and mold (cladosporium) are moderate; mugwort, ragweed, and mold (alternaria) are low.
Pollen Tomorrow
Tomorrow (7 October 2026) grass remains moderate, mugwort remains low, mold (alternaria) remains low, mold (cladosporium) remains moderate, ragweed increasing.
7-Day Trend
Over the next week mugwort will increase; grass, ragweed, mold (alternaria), and mold (cladosporium) 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) | Moderate | 26/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 2/100 |
| Ragweed (Ambrosia) | Low | 25/100 |
| Alternaria | Low | 19/100 |
| Cladosporium | Moderate | 29/100 |
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) | Moderate | 27/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 4/100 | |
| Ragweed (Ambrosia) | Moderate | 27/100 | |
| Alternaria | Low | 20/100 | |
| Cladosporium | Moderate | 33/100 |
Local Environmental Conditions
The area around this part of San Martin is heavily wooded, with some open grassland. Along a watercourse nearby, trees, shrubs and reeds grow in the damper ground and add their own pollen. The key allergenic tree nearby is oak. Grasses add a sizeable share of the local pollen. Grasses along roadsides, verges and open ground also add to the overall pollen load.
Tree pollen peaks in late spring, when the weather warms to around 15°C and oak is in full flower. Grasses take over in midsummer and keep pollen in the air into early fall. A smaller weed peak follows from early summer into early fall. Winter is the wettest time of year, and heavy showers can bring short breaks in pollen.
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Frequently Asked Questions About Pollen in California
Is pollen high in San Martin right now?
On 6 October 2026, overall pollen levels in San Martin are moderate. Grass is the main contributor to airborne pollen, while ambrosia and artemisia remain at lower levels
Will pollen levels change in San Martin tomorrow?
On 7 October 2026, pollen conditions in San Martin will be different from today, with grass at moderate levels, artemisia at low levels and ambrosia increasing
Is pollen expected to decrease in San Martin this week?
According to the five-day outlook, grass and ambrosia pollen levels are expected to gradually decrease, while artemisia pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in San Martin?
On 6 October 2026, Grass is the dominant pollen source in San Martin. ambrosia and artemisia are also present but at lower levels.
When is pollen season in San Martin?
How often is the San Martin pollen forecast updated?
The San Martin pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in San Martin 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 San Martin 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 San Martin, 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).
