Eastdale, Oshawa Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Eastdale, Oshawa is low; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (11 October 2026) mold (alternaria) remains low, mold (cladosporium) remains low, grass at low levels, mugwort at low levels, ragweed at moderate levels.
7-Day Trend
Over the next week grass, mugwort, ragweed, mold (alternaria), and mold (cladosporium) 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) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | None | 0/100 |
| Mold (Alternaria) | Low | 3/100 |
| Mold (Cladosporium) | Low | 15/100 |
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 | 19/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 19/100 | |
| Ragweed (Ambrosia) | Moderate | 28/100 | |
| Mold (Alternaria) | Low | 3/100 | |
| Mold (Cladosporium) | Low | 13/100 |
Local Environmental Conditions
The area around this part of Oshawa is a mix of woodland and built-up land. Lawns and planted trees in a nearby park add to local grass and tree pollen. The leading allergenic tree nearby is maple, with birch and poplar close behind. Grasses are a major source, with ragweed and plantain adding to the weed pollen load.
Tree pollen peaks in mid-spring, when the weather warms to around 5°C and maple, birch and poplar are in full flower. Grass pollen follows, peaking in early summer and easing off by early fall. Later, ragweed and plantain keep 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 Ontario
Is pollen high in Oshawa right now?
Currently, there is no significant pollen in Oshawa.
Will pollen levels change in Oshawa tomorrow?
On 11 October 2026, pollen conditions in Oshawa will be different from today, with grass at low levels, ambrosia at moderate levels, artemisia at low levels
Is pollen expected to decrease in Oshawa this week?
According to the five-day outlook, grass, ambrosia, and artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Oshawa?
On 10 October 2026, there are no significant pollen types in Oshawa.
When is pollen season in Oshawa?
How often is the Oshawa pollen forecast updated?
The Oshawa pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Oshawa 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 Oshawa 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 Oshawa, 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).
