Portage la Prairie Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Portage la Prairie is moderate; ragweed, mold (alternaria), and mold (cladosporium) are moderate; mugwort is low.
Pollen Tomorrow
Tomorrow (11 October 2026) mold (alternaria) declining, mold (cladosporium) declining, mugwort no longer expected, ragweed no longer expected.
7-Day Trend
Over the next week mugwort, ragweed, and mold (alternaria) will increase; mold (cladosporium) will decrease; grass will remain stable.
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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) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 25/100 |
| Ragweed (Ambrosia) | Moderate | 33/100 |
| Mold (Alternaria) | Moderate | 27/100 |
| Mold (Cladosporium) | Moderate | 38/100 |
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) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | None | 0/100 | |
| Mold (Alternaria) | Low | 2/100 | |
| Mold (Cladosporium) | Low | 9/100 |
Local Environmental Conditions
Built-up land makes up around 49% of the area near the center of Portage la Prairie, with some woodland and open grassland. With the Assiniboine River nearby, riverside vegetation along its banks contributes to the local mix. Locally, the surrounding woods make trees an important source; planted trees and mown lawns are the main sources in the built-up parts.
Tree pollen comes first, peaking in mid-spring. Grasses take over in early summer and keep pollen in the air into late summer. A smaller weed peak follows from midsummer into mid-fall. Spring is the wettest time of year, and heavy showers can bring short breaks in pollen. By mid-fall, as temperatures fall to around 10°C, pollen levels are low again.
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Frequently Asked Questions About Pollen in Manitoba
Is pollen high in Portage la Prairie right now?
On 10 October 2026, overall pollen levels in Portage la Prairie are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia remain at lower levels
Will pollen levels change in Portage la Prairie tomorrow?
On 11 October 2026, pollen conditions in Portage la Prairie will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Portage la Prairie this week?
According to the five-day outlook, ambrosia and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Portage la Prairie?
On 10 October 2026, Ambrosia is the dominant pollen source in Portage la Prairie. artemisia are also present but at lower levels. grass are not currently active.
When is pollen season in Portage la Prairie?
How often is the Portage la Prairie pollen forecast updated?
The Portage la Prairie pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Portage la Prairie 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 Portage la Prairie 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 Portage la Prairie, 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).
