Downtown Terre Haute, Terre Haute Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Downtown Terre Haute, Terre Haute is moderate; mold (cladosporium) is moderate; grass, ragweed, and mold (alternaria) are low.
Pollen Tomorrow
Tomorrow (11 October 2026) grass remains low, ragweed remains low, mold (alternaria) remains low, mold (cladosporium) declining.
7-Day Trend
Over the next week mugwort and mold (cladosporium) will increase; grass, ragweed, and mold (alternaria) will decrease.
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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 | 4/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Low | 8/100 |
| Mold (Alternaria) | Low | 15/100 |
| 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) | Low | 13/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 16/100 | |
| Mold (Alternaria) | Low | 11/100 | |
| Mold (Cladosporium) | Low | 16/100 |
Local Environmental Conditions
Most of the area around this part of Terre Haute is built-up land, with some woodland and open grassland. With the Wabash River nearby, riverside vegetation along its banks contributes to the local mix. Common allergenic trees nearby include maple. There is plenty of grass pollen here too. Locally, street trees, parks and lawns are the main sources in the built-up parts.
Maple leads the season in early spring, as temperatures climb to around 5°C, and tree pollen reaches its peak. Grasses take over in late spring, with temperatures around 20°C, and their pollen lingers into early fall. A smaller weed peak follows from early summer into early fall. Summer 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 Indiana
Is pollen high in Terre Haute right now?
On 10 October 2026, overall pollen levels in Terre Haute are low. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Terre Haute tomorrow?
On 11 October 2026, pollen conditions in Terre Haute will be similar to today, with ambrosia at low levels, grass at low levels
Is pollen expected to decrease in Terre Haute this week?
According to the five-day outlook, ambrosia and grass 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 Terre Haute?
On 10 October 2026, Ambrosia is the dominant pollen source in Terre Haute. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Terre Haute?
How often is the Terre Haute pollen forecast updated?
The Terre Haute pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Terre Haute 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 Terre Haute 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 Terre Haute, 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).
