Niagara Falls pollen forecast — Niagara Falls (Horseshoe Falls) neighborhood
Pollen Today
Today (20 September) pollen in Niagara Falls (Horseshoe Falls), Niagara Falls is low; grass, mugwort, and ragweed are low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass no longer expected, mugwort no longer expected, ragweed no longer expected.
7-Day Trend
Over the next week grass, mugwort, and ragweed will increase.
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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) | Low | 18/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 1/100 |
| Ragweed (Ambrosia) | Low | 18/100 |
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) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | None | 0/100 |
Local Environmental Conditions
Niagara Falls' gorge setting features oak, maple, and ash as the main tree pollen sources, with exposure varying between the misty falls-side parkland and the surrounding Niagara Peninsula farmland and vineyards.
Shrouded in near-constant mist from the cascading water itself, Niagara Falls (Horseshoe Falls) experiences a uniquely humid microclimate that both extends and dampens the local pollen season, with mist-soaked riverside vegetation releasing tree pollen earlier in spring while the falls' spray keeps airborne grass and ragweed counts somewhat lower than surrounding orchard land.
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Frequently Asked Questions About Pollen in Ontario
Is pollen high in Niagara Falls right now?
On 20 September 2026, overall pollen levels in Niagara Falls are low. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Niagara Falls tomorrow?
On 21 September 2026, pollen conditions in Niagara Falls will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Niagara Falls 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 Niagara Falls?
On 20 September 2026, Ambrosia is the dominant pollen source in Niagara Falls. artemisia and grass are also present but at lower levels.
When is pollen season in Niagara Falls?
How often is the Niagara Falls pollen forecast updated?
The Niagara Falls pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Niagara 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 Niagara 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 Niagara 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).
