Shiloh pollen forecast - today, tomorrow and the week ahead

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

On 31 August 2026, pollen conditions in Shiloh will be similar to today, with artemisia at high levels, grass at moderate levels, ambrosia at high levels

According to the five-day outlook, artemisia, grass, and ambrosia 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 Shiloh. ambrosia and grass are also present but at lower levels. cypress are not currently active.

The waterside hazel and willow are consistently first to release pollen each year, topping out well before most other trees start releasing pollen, around February and March. Woodland oak and birch pick up the pace next, through mid-to-late spring, peaking in the heart of spring, generally April into May. Grass pollen rises through late spring toward a June high point, before ragweed pollen takes center stage across mid-August into October.

The Shiloh 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 Shiloh, 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.