Belfast pollen forecast - today, tomorrow and the week ahead

On 30 August 2026, overall pollen levels in Belfast are moderate. Artemisia is the main contributor to airborne pollen, while cypress, myrtle, and platanus remain at lower levels

On 31 August 2026, pollen conditions in Belfast will be similar to today, with cypress at low levels, myrtle at low levels, platanus at low levels, artemisia at moderate levels

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

On 30 August 2026, Artemisia is the dominant pollen source in Belfast. cypress, myrtle, and platanus are also present but at lower levels. morus, grass, oak, and urtica are not currently active.

Dust and dry air define the Belfast winter until acacia and eucalyptus break the pattern in August, setting up a grass-dominated October-November peak amid maize, sunflower, and grain farming operations. Once the plateau's summer thunderstorms establish themselves, pollen and airborne dust both settle down considerably. This mirrors the broader seasonal pattern seen across much of the Highveld region.

The Belfast 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 Belfast, 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.