Old City Quarter, Nanaimo Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Old City Quarter, Nanaimo is low; ragweed, mold (alternaria), and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (11 October 2026) levels are similar to today.
7-Day Trend
Over the next week grass, mugwort, and ragweed will increase; 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) | Low | 4/100 |
| Mold (Alternaria) | Low | 2/100 |
| Mold (Cladosporium) | Low | 9/100 |
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) | Low | 15/100 | |
| Mold (Alternaria) | Low | 2/100 | |
| Mold (Cladosporium) | Low | 9/100 |
Local Environmental Conditions
The area around this part of Nanaimo is mostly built-up land, with some open water and woodland. Of the allergenic trees nearby, oak matters most, while maple and alder also contribute. Beyond the trees, grasses matter a great deal, and plantain is the main weed source. Around here, street trees, parks and lawns are the main sources in the built-up parts.
First to flower is alder, in early spring. Tree pollen peaks in late spring, when the weather warms to around 10°C and oak and maple are in full flower. Grasses take over in midsummer and keep pollen in the air into early fall. Later, plantain keeps weed pollen in the air from late spring into early fall. Rain is heaviest in winter, often giving short breaks from high pollen levels.
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Resource Hub
Pollen forecast neighborhoods 6 neighborhoods
Sports venues in Nanaimo 1 sports venue
Frequently Asked Questions About Pollen in British Columbia
Is pollen high in Nanaimo right now?
On 10 October 2026, overall pollen levels in Nanaimo are low. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Nanaimo tomorrow?
On 11 October 2026, pollen conditions in Nanaimo will be similar to today, with ambrosia at low levels
Is pollen expected to decrease in Nanaimo 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 Nanaimo?
On 10 October 2026, Ambrosia is the dominant pollen source in Nanaimo. artemisia and grass are not currently active.
When is pollen season in Nanaimo?
How often is the Nanaimo pollen forecast updated?
The Nanaimo pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Nanaimo 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 Nanaimo 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 Nanaimo, 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).
