Arcilla, Temescal Valley Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Arcilla, Temescal Valley is moderate; mold (alternaria) and mold (cladosporium) are moderate; grass and ragweed are low.
Pollen Tomorrow
Tomorrow (11 October 2026) ragweed remains low, mold (alternaria) declining, mold (cladosporium) declining, grass no longer expected.
7-Day Trend
Over the next week grass, mugwort, ragweed, mold (alternaria), and mold (cladosporium) will increase.
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Pollen Risk
Today - 10 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 | 6/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Low | 23/100 |
| Mold (Alternaria) | Moderate | 27/100 |
| Mold (Cladosporium) | Moderate | 27/100 |
Tomorrow - 11 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 | 18/100 | |
| Mold (Alternaria) | Low | 15/100 | |
| Mold (Cladosporium) | Low | 25/100 |
Local Environmental Conditions
This location in Temescal Valley is surrounded mainly by open grassland, with a good deal of bare ground and some scrubland. Close to a stream or river, riverside trees such as willow and plane tree contribute to what is in the air. Of the allergenic trees nearby, oak matters most, while willow and plane tree also contribute. Grasses and weeds such as pigweed and mugwort round out the local mix.
Tree pollen peaks in mid-spring, when the weather warms to around 15°C and oak, willow and plane tree are in full flower. Grass pollen follows, peaking in late spring and easing off by early fall. The season closes with pigweed and mugwort 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 Temescal Valley right now?
On 10 October 2026, overall pollen levels in Temescal Valley are low. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Temescal Valley tomorrow?
On 11 October 2026, pollen conditions in Temescal Valley will be different from today, with ambrosia at low levels
Is pollen expected to decrease in Temescal Valley this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Temescal Valley?
On 10 October 2026, Ambrosia is the dominant pollen source in Temescal Valley. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Temescal Valley?
How often is the Temescal Valley pollen forecast updated?
The Temescal Valley pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Temescal Valley 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 Temescal Valley 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 Temescal Valley, 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. |
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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).
