Aalst pollen forecast - today, tomorrow and the week ahead

On 16 July 2026, overall pollen levels in Aalst are low. Grass is the main contributor to airborne pollen

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

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

On 16 July 2026, Grass is the dominant pollen source in Aalst. birch, hazel, cypress, willow, alder, and artemisia are not currently active.

Pollen exposure in Aalst tracks hazel and alder in late winter, a oak and linden peak in spring, and grass across early summer, with the season running January through August. Calmer, drier days tend to let pollen linger longer here than in windier weather.

The Aalst 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 Aalst, 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.