San Pasqual Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (6 October) pollen in San Pasqual is moderate; ragweed and mold (alternaria) are moderate; grass and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (7 October 2026) grass remains low, ragweed remains moderate, mold (alternaria) remains moderate, mold (cladosporium) remains low, mugwort at low levels.
7-Day Trend
Over the next week mugwort, mold (alternaria), and mold (cladosporium) will increase; grass and ragweed 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) | Low | 19/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Moderate | 41/100 |
| Alternaria | Moderate | 31/100 |
| Cladosporium | Low | 25/100 |
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 | 22/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 2/100 | |
| Ragweed (Ambrosia) | Moderate | 45/100 | |
| Alternaria | Moderate | 28/100 | |
| Cladosporium | Low | 23/100 |
Local Environmental Conditions
The heart of San Pasqual sits among a blend of woodland and open grassland, plus some scrubland. Along a watercourse nearby, trees, shrubs and reeds grow in the damper ground and add their own pollen. Oak stands out as the main allergenic tree nearby. Grass pollen is plentiful, while mugwort and pigweed lead among the weeds.
Oak leads the season in mid-spring, as temperatures climb to around 15°C, and tree pollen reaches its peak. Then come the grasses, strongest in late spring and fading by early fall. Mugwort and pigweed bring a final peak through summer. Rain is heaviest in spring, often giving short breaks from high pollen levels.
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Frequently Asked Questions About Pollen in California
Is pollen high in San Pasqual right now?
On 6 October 2026, overall pollen levels in San Pasqual are moderate. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in San Pasqual tomorrow?
On 7 October 2026, pollen conditions in San Pasqual will be different from today, with artemisia at low levels, grass at low levels, ambrosia at moderate levels
Is pollen expected to decrease in San Pasqual 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 Pasqual?
On 6 October 2026, Ambrosia is the dominant pollen source in San Pasqual. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in San Pasqual?
How often is the San Pasqual pollen forecast updated?
The San Pasqual pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in San Pasqual 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 Pasqual 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 Pasqual, 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).
