Portland pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Portland is low; eucalyptus is low. Tomorrow (10 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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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Portland's coastal setting supports windswept heathland and low coastal scrub shaped by constant exposure to Southern Ocean winds, with limited tree cover except in sheltered pockets; much of the land beyond town is cleared for sheep and cattle grazing. Manna gum and coastal moonah persist in sheltered pockets away from the worst of the salt-laden winds, while the volcanic soils of the Portland district, part of Victoria's western volcanic plains, support some of the state's most productive grazing land beyond the immediate coastal fringe.
Today - 9 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
3/100
-
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 - 10 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):
None
0/100
-
Grass (Poaceae):
None
0/100
-
Willow (Salicaceae):
None
0/100
Air quality in Portland
View air qualityFrequently Asked Questions
Is pollen high in Portland right now?
On 9 August 2026, overall pollen levels in Portland are low. Myrtle is the main contributor to airborne pollen
Will pollen levels change in Portland tomorrow?
On 10 August 2026, pollen conditions in Portland will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Portland 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?
On 9 August 2026, Myrtle is the dominant pollen source in Portland. grass, acacia, and cypress are not currently active.
When is pollen season in Portland?
How often is the Portland pollen forecast updated?
The Portland pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Portland 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 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, 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?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Portland.
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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.