Shire of Colac Otway pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Shire of Colac Otway is moderate; eucalyptus is moderate; cypress is low.
Pollen Tomorrow
Tomorrow (21 September 2026) cypress increasing, eucalyptus increasing, acacia at low levels.
7-Day Trend
Over the next week acacia, cypress, eucalyptus, and grass will increase.
Explore Forecasts
Air Quality
Pollen for Neighborhoods
Air Quality in Other Cities
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Acacia (Acacia) | None | 0/100 |
| Cypress (Cupressaceae) | Low | 20/100 |
| Eucalyptus (Myrtaceae) | Moderate | 45/100 |
| Grass (Poaceae) | None | 0/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Acacia (Acacia) | Low | 10/100 | |
| Cypress (Cupressaceae) | Moderate | 37/100 | |
| Eucalyptus (Myrtaceae) | High | 62/100 | |
| Grass (Poaceae) | None | 0/100 |
Local Environmental Conditions
Here, nearby, along the damp banks, wattle and casuarina release some of the year's first tree pollen. Located in the wider area, this area has plane tree and eucalypt dominating the treeline, both heavy contributors to the spring pollen load. Nearby weather stations report comparable trends across the broader stretch of the county.
In Shire of Colac Otway, temperatures climbing to 12.0°C by September likely mark the start of the main pollen release, with humidity around 75% helping keep counts airborne. Warmer conditions by December (16.5°C, 70% humidity) sustain grass pollen through the season, before rainfall of 39mm in March and cooling toward 10.5°C in June bring the season to a close.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Pollen forecast neighborhoods 1 neighborhood
Frequently Asked Questions About Pollen in Victoria
Is pollen high in Shire of Colac Otway right now?
On 20 September 2026, overall pollen levels in Shire of Colac Otway are moderate. Myrtle is the main contributor to airborne pollen, while cypress remain at lower levels
Will pollen levels change in Shire of Colac Otway tomorrow?
On 21 September 2026, pollen conditions in Shire of Colac Otway will be different from today, with acacia at low levels and cypress, myrtle increasing
Is pollen expected to decrease in Shire of Colac Otway this week?
According to the five-day outlook, acacia, cypress, myrtle, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Shire of Colac Otway?
On 20 September 2026, Myrtle is the dominant pollen source in Shire of Colac Otway. cypress are also present but at lower levels. acacia and grass are not currently active.
When is pollen season in Shire of Colac Otway?
How often is the Shire of Colac Otway pollen forecast updated?
The Shire of Colac Otway pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Shire of Colac Otway 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 Shire of Colac Otway 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 Shire of Colac Otway, 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).
