Nanaimo pollen forecast - today, tomorrow and the week ahead

Today (30 August) pollen in Nanaimo is high; ragweed is high; grass is moderate; mugwort is low. Tomorrow (31 August 2026) levels are similar - ragweed remains high, grass increasing, mugwort increasing. Over the following five days grass and ragweed will increase; mugwort will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Nanaimo's Vancouver Island harbour setting features Douglas fir, arbutus, and Garry oak as pollen sources, with Newcastle Island's forested shoreline contrasting the historic coal-mining downtown that now anchors ferry travel to the mainland.

Today - 30 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Moderate

    33/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    15/100

  • Ragweed (Ambrosia):

    High

    63/100

High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.

Tomorrow - 31 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    High

    56/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Moderate

    37/100

  • Ragweed (Ambrosia):

    High

    70/100

Air quality in Nanaimo

View air quality

Pollen forecast for neighborhoods and landmarks in Nanaimo

Departure Bay Nanaimo Harbourfront Newcastle Island North Nanaimo Old City Quarter South Nanaimo

Sports venues in Nanaimo

Frank Crane Arena

Frequently Asked Questions

Is pollen high in Nanaimo right now?

On 30 August 2026, overall pollen levels in Nanaimo are high. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels

Will pollen levels change in Nanaimo tomorrow?

On 31 August 2026, pollen conditions in Nanaimo will be different from today, with ambrosia at high levels and artemisia, grass increasing

Is pollen expected to decrease in Nanaimo this week?

According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while ambrosia and grass pollen will increase, suggesting mixed conditions later in the week.

Which pollen types are currently active in Nanaimo?

On 30 August 2026, Ambrosia is the dominant pollen source in Nanaimo. grass and artemisia are also present but at lower levels. cypress are not currently active.

When is pollen season in Nanaimo?
Set on the eastern shore of Vancouver Island, Nanaimo experiences a mild, moisture-softened pollen season, with alder and cedar driving an early tree bloom, while the island's coastal humidity keeps both grass and ragweed exposure noticeably gentler than in Canada's drier interior regions through the summer months.
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.

Check pollen in other popular cities:

Melton Rio de Janeiro Copenhagen Athens Denpasar Rome Cape Town Barcelona London Los Angeles New York

Data provided by Airmine — Last update: 30 August 2026 at 14:32 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Nanaimo.

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Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.

Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.

Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.