Greater Sudbury pollen forecast — New Sudbury neighborhood
Pollen Today
Today (20 September) pollen in New Sudbury, Greater Sudbury is moderate; ragweed is moderate; grass and mugwort are low.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed declining, grass no longer expected, mugwort 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 | 11/100 |
| Ragweed (Ambrosia) | Moderate | 47/100 |
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) | Low | 12/100 |
Local Environmental Conditions
Located just outside the immediate area, this area has the waterside growth here is largely hazel and willow, both efficient wind-pollen dispersers. This area, a short distance from here, has oak and birch dominating the treeline, both heavy contributors to the spring pollen load. This area, a short distance from here, has well-kept lawns and ornamental trees in this park add their share of grass and ragweed pollen.
Near the bank, hazel and willow lead the seasonal calendar, peaking in late winter through March. Woodland oak and birch pick up the pace next, through mid-to-late spring, peaking in the heart of spring, generally April into May. Grass pollen rises through late spring toward a June high point, then gives way to ragweed, which drives the season's second major surge from mid-August into October.
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Resource Hub
Pollen forecast neighborhoods 14 neighborhoods
Sports venues in Greater Sudbury 1 sports venue
Frequently Asked Questions About Pollen in Ontario
Is pollen high in Greater Sudbury right now?
On 20 September 2026, overall pollen levels in Greater Sudbury are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in Greater Sudbury tomorrow?
On 21 September 2026, pollen conditions in Greater Sudbury will be different from today, with ambrosia continuing to decline
Is pollen expected to decrease in Greater Sudbury this week?
According to the five-day outlook, artemisia, grass, and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Greater Sudbury?
On 20 September 2026, Ambrosia is the dominant pollen source in Greater Sudbury. artemisia and grass are also present but at lower levels.
When is pollen season in Greater Sudbury?
How often is the Greater Sudbury pollen forecast updated?
The Greater Sudbury pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Greater Sudbury 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 Greater Sudbury 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 Greater Sudbury, 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).
