Freetown pollen forecast - today, tomorrow and the week ahead

On 30 August 2026, overall pollen levels in Freetown are high. Grass is the main contributor to airborne pollen, while ambrosia and artemisia remain at lower levels

On 31 August 2026, pollen conditions in Freetown will be different from today, with ambrosia at moderate levels and artemisia, grass continuing to decline

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

On 30 August 2026, Grass is the dominant pollen source in Freetown. ambrosia and artemisia are also present but at lower levels. cypress are not currently active.

Along the waterway, hazel and willow release pollen first, climbing steadily from late winter into March. The woodland's oak and birch trees become the main pollen source by mid-spring, peaking in the heart of spring, generally April into May. By late spring, grass pollen is climbing steadily toward a June high point, and ragweed later takes the lead from mid-August through October.

The Freetown 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 Freetown, 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.