Glens Falls pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Glens Falls is moderate; ragweed is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed remains moderate, grass at low levels, mugwort at low levels.
7-Day Trend
Over the next week mugwort will increase; grass and ragweed will decrease.
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Pollen Risk
Today - 20 September
| 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) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Moderate | 36/100 |
Tomorrow - 21 September
| 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 | 7/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 1/100 | |
| Ragweed (Ambrosia) | Moderate | 42/100 |
Local Environmental Conditions
Glens Falls's Adirondack foothills Hudson Valley setting features paper birch, maple, and oak as the main tree pollen sources, with exposure varying between the wooded Adirondack foothills residential areas to the north and west and the more built-up Hudson River valley commercial areas. The Hudson River corridor channels airflows, while the Adirondack Park boundary nearby creates a distinct forested-urban pollen gradient throughout the season.
Glens Falls's upstate New York Adirondack foothills setting produces a season opening in late March with elm and maple before birch and oak peak through May. Grass from surrounding New York farmland peaks through June and July before mugwort and nettle extend exposure into September. The Hudson River valley channels airflows, while the Adirondack Mountain proximity means the season begins slightly later than in lower Hudson Valley cities.
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Frequently Asked Questions About Pollen in New York
Is pollen high in Glens Falls right now?
On 20 September 2026, overall pollen levels in Glens Falls are moderate. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Glens Falls tomorrow?
On 21 September 2026, pollen conditions in Glens Falls will be different from today, with ambrosia at moderate levels, artemisia at low levels, grass at low levels
Is pollen expected to decrease in Glens Falls 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 Glens Falls?
On 20 September 2026, Ambrosia is the dominant pollen source in Glens Falls. artemisia and grass are not currently active.
When is pollen season in Glens Falls?
How often is the Glens Falls pollen forecast updated?
The Glens Falls pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Glens Falls 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 Glens Falls 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 Glens Falls, 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 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
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).
