Rimouski pollen forecast - today, tomorrow and the week ahead

Currently, there is no significant pollen in Rimouski.

On 17 July 2026, pollen conditions in Rimouski will be different from today, with grass at medium levels, ambrosia at medium levels, artemisia at low levels

According to the five-day outlook, grass, ambrosia, and artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.

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

Perched on the Saint Lawrence estuary where fresh water meets the sea, Rimouski experiences a cool, maritime-influenced pollen season, with boreal and mixed forest producing a delayed spring tree bloom, while the estuary's salt-tempered air keeps grass and ragweed exposure noticeably lighter than in Québec's inland farming regions.

The Rimouski 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 Rimouski, 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.