Laurentian Valley pollen forecast - today, tomorrow and the week ahead

On 9 August 2026, overall pollen levels in Laurentian Valley are low. Artemisia is the main contributor to airborne pollen, while ambrosia remain at lower levels

On 10 August 2026, pollen conditions in Laurentian Valley will be different from today, with grass at low levels and artemisia, ambrosia increasing

According to the five-day outlook, artemisia, grass, and ambrosia pollen levels will increase later in the week.

On 9 August 2026, Artemisia is the dominant pollen source in Laurentian Valley. ambrosia are also present but at lower levels. cypress and grass are not currently active.

Along the waterway, hazel and willow release pollen first, climbing steadily from late winter into March. As spring advances, oak and birch in the nearby woodland become the dominant source, typically the year's sharpest tree-pollen spell, centered on April and May. Through late spring, grass pollen climbs steadily toward its June peak, before ragweed becomes the more dominant allergen from mid-August into October.

The Laurentian Valley 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 Laurentian Valley, 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.