Greenwood, Indiana Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Greenwood, Indiana 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 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 | 8/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Low | 13/100 |
| Mold (Alternaria) | Low | 21/100 |
| Mold (Cladosporium) | Moderate | 30/100 |
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 | 4/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 9/100 | |
| Mold (Alternaria) | Low | 9/100 | |
| Mold (Cladosporium) | Low | 14/100 |
Local Environmental Conditions
The area around the heart of Greenwood, Indiana is a mix of built-up land and open grassland, plus some woodland. With the White River nearby, riverside trees such as plane tree along its banks contribute to the local mix. Plane tree is the most prominent allergenic tree nearby, with maple and mulberry also present. Grasses are a major source, with ragweed adding to the weed pollen load.
Tree pollen peaks in mid-spring, when the weather warms to around 10°C and plane tree, maple and mulberry are in full flower. Grass pollen follows, peaking in late spring and easing off by early fall. Later, ragweed keeps weed pollen in the air from late summer into mid-fall. By late fall, as temperatures fall to around 5°C, pollen levels are low again.
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Frequently Asked Questions About Pollen in Indiana
Is pollen high in Greenwood, Indiana right now?
On 10 October 2026, overall pollen levels in Greenwood, Indiana are low. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Greenwood, Indiana tomorrow?
On 11 October 2026, pollen conditions in Greenwood, Indiana will be similar to today, with ambrosia at low levels, grass at low levels
Is pollen expected to decrease in Greenwood, Indiana 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 Greenwood, Indiana?
On 10 October 2026, Ambrosia is the dominant pollen source in Greenwood, Indiana. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Greenwood, Indiana?
How often is the Greenwood, Indiana pollen forecast updated?
The Greenwood, Indiana pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Greenwood, Indiana 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 Greenwood, Indiana 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 Greenwood, Indiana, 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).
