Portland West pollen forecast - today, tomorrow and the week ahead

Today (24 August) pollen in Portland West is low; eucalyptus is low. Tomorrow (25 August 2026) levels are similar. Over the following five days eucalyptus will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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This area lacks mapped woodland or water close at hand, leaving grass along open ground as the probable main source. Comparable land cover in surrounding areas tends to produce a similar pollen mix overall. Local microclimate and soil conditions can push these figures slightly higher or lower. The broader area tends to mirror this pattern, with only minor local variation.

Today - 24 August

  • Acacia (Acacia):

    None

    0/100

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Eucalyptus (Myrtaceae):

    Low

    9/100

  • Grass (Poaceae):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

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 - 25 August

  • Acacia (Acacia):

    None

    0/100

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Eucalyptus (Myrtaceae):

    Low

    14/100

  • Grass (Poaceae):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

Air quality in Portland West

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Frequently Asked Questions

Is pollen high in Portland West right now?

On 24 August 2026, overall pollen levels in Portland West are low. Myrtle is the main contributor to airborne pollen

Will pollen levels change in Portland West tomorrow?

On 25 August 2026, pollen conditions in Portland West will be similar to today, with myrtle at low levels

Is pollen expected to decrease in Portland West this week?

According to the five-day outlook, myrtle pollen levels will increase later in the week.

Which pollen types are currently active in Portland West?

On 24 August 2026, Myrtle is the dominant pollen source in Portland West. acacia, cypress, and grass are not currently active.

When is pollen season in Portland West?
Grass pollen climbs toward a November peak, before gradually tapering off through the peak of summer into February. Warmer or wetter years can pull these peaks a week or two earlier or later. This general pattern holds fairly steady across the surrounding region from year to year. Local weather swings can shift these windows slightly, but the overall order tends to hold.
How often is the Portland West pollen forecast updated?

The Portland West pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in Portland West 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 Portland West 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 Portland West, 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.

Want to see pollen forecasts for other cities in Australia?

Brisbane Forster Melton Toowoomba Ulladulla Young

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: 24 August 2026 at 20:27 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Portland West.

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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.