Northam pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Northam is moderate; acacia and cypress are moderate; eucalyptus and grass are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week acacia, cypress, eucalyptus, and grass will decrease.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | Moderate | 27/100 |
| Cypress (Cupressaceae) | Moderate | 40/100 |
| Eucalyptus (Myrtaceae) | Low | 9/100 |
| Grass (Poaceae) | Low | 13/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Moderate | 36/100 | |
| Cypress (Cupressaceae) | Moderate | 48/100 | |
| Eucalyptus (Myrtaceae) | Low | 18/100 | |
| Grass (Poaceae) | Low | 23/100 |
Local Environmental Conditions
Northam anchors WA's wheatbelt on the Avon River, a landscape almost entirely cleared for wheat and canola cropping and sheep grazing; remnant salmon gum and York gum woodland survives in scattered reserves, with wattle prominent each spring along uncleared roadsides. The area's Mediterranean-type climate produces a winter wattle season followed by a spring grass pollen peak, both easing markedly once the characteristically dry, warm summer arrives.
Northam, in the Avon Valley on the edge of WA's wheatbelt, experiences a sharper, more inland version of the state's Mediterranean pollen season. Being away from the coast's moderating influence, Northam sees hotter, drier conditions that can compress the pollen season into a shorter, more intense burst, roughly August to October. Grass pollen from surrounding wheat and grazing paddocks dominates the peak, while tree pollen from casuarina and remnant woodland contributes earlier in the season, before summer heat arrives abruptly.
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Resource Hub
Pollen forecast neighborhoods 3 neighborhoods
Sports venues in Northam 1 sports venue
Frequently Asked Questions About Pollen in Western Australia
Is pollen high in Northam right now?
On 20 September 2026, overall pollen levels in Northam are moderate. Cypress is the main contributor to airborne pollen, while acacia, myrtle, and grass remain at lower levels
Will pollen levels change in Northam tomorrow?
On 21 September 2026, pollen conditions in Northam will be similar to today, with cypress at moderate levels, myrtle at low levels, grass at low levels, acacia at moderate levels
Is pollen expected to decrease in Northam this week?
According to the five-day outlook, cypress, myrtle, grass, and acacia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Northam?
On 20 September 2026, Cypress is the dominant pollen source in Northam. acacia, myrtle, and grass are also present but at lower levels.
When is pollen season in Northam?
How often is the Northam pollen forecast updated?
The Northam pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Northam 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 Northam 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 Northam, 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).
