Colac pollen forecast - today, tomorrow and the week ahead

Currently, there is no significant pollen in Colac.

On 17 July 2026, pollen conditions in Colac will be similar to today with no significant pollen expected.

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

On 16 July 2026, there are no significant pollen types in Colac.

Colac's pollen season runs from August through January, with tree pollen from eucalypts and wattle peaking in August and September and rye grass pollen from October to December, a significant factor here given the extensive dairy pasture surrounding the town in Victoria's Western District, bringing an elevated thunderstorm asthma risk during spring storms, particularly on warm, windy days. Cooler, moister conditions typical of the Western District compared with Melbourne can extend pasture grass flowering into early summer.

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

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.

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 Colac, 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.