Leeds and the Thousand Islands pollen forecast - today, tomorrow and the week ahead

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

On 10 August 2026, pollen conditions in Leeds and the Thousand Islands will be similar to today, with artemisia at low levels, ambrosia at low levels

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 Leeds and the Thousand Islands. ambrosia are also present but at lower levels. cypress and grass are not currently active.

Near the bank, hazel and willow lead the seasonal calendar, getting an early start, typically cresting between February and March. Woodland oak and birch pick up the pace next, through mid-to-late spring, climbing steadily through spring to a peak in April or May. Grass pollen becomes the dominant allergen through late spring, peaking in June, then yields to ragweed, the dominant late-summer and fall allergen through October.

The Leeds and the Thousand Islands 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 Leeds and the Thousand Islands, 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.