Alsatians of Texas, Castroville, Texas Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (6 October) pollen in Alsatians of Texas, Castroville, Texas is high; ragweed is high; grass is moderate; mugwort is low.
Pollen Tomorrow
Tomorrow (7 October 2026) mugwort remains low, ragweed remains high, grass increasing.
7-Day Trend
Over the next week grass and ragweed will increase; mugwort will decrease.
Explore Forecasts
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
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 | 42/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 9/100 |
| Ragweed (Ambrosia) | High | 53/100 |
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) | High | 55/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 21/100 | |
| Ragweed (Ambrosia) | High | 65/100 |
Local Environmental Conditions
This site in Castroville, Texas, is surrounded mainly by woodland, with some built-up land and open grassland. Along a stream or river nearby, trees, shrubs and reeds grow in the damper ground and add their own pollen. Of the trees nearby, pecan and elm are the ones that matter most for allergies. Grass pollen adds noticeably to the overall load.
Across the year, elm opens the pollen season from midwinter into late winter. Tree pollen then builds as pecan flowers, peaking around early spring. Grasses are next, reaching their height around late spring and tailing off by late summer. Later, weeds flowering on open and disturbed ground keep some pollen in the air from early summer into early fall. Locally, winters average around 10°C and summers around 30°C.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Frequently Asked Questions About Pollen in Texas
Is pollen high in Castroville, Texas right now?
On 6 October 2026, overall pollen levels in Castroville, Texas are high. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Castroville, Texas tomorrow?
On 7 October 2026, pollen conditions in Castroville, Texas will be different from today, with ambrosia at high levels, artemisia at low levels and grass increasing
Is pollen expected to decrease in Castroville, Texas this week?
According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while ambrosia and grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Castroville, Texas?
On 6 October 2026, Ambrosia is the dominant pollen source in Castroville, Texas. grass and artemisia are also present but at lower levels.
When is pollen season in Castroville, Texas?
How often is the Castroville, Texas pollen forecast updated?
The Castroville, Texas pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Castroville, Texas 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 Castroville, Texas 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 Castroville, Texas, 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).
