Edwardsville pollen forecast - today, tomorrow and the week ahead

On 9 August 2026, overall pollen levels in Edwardsville are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels

On 10 August 2026, pollen conditions in Edwardsville will be different from today, with grass at low levels, ambrosia at medium levels and artemisia increasing

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

On 9 August 2026, Ambrosia is the dominant pollen source in Edwardsville. grass and artemisia are also present but at lower levels. cypress are not currently active.

Trees along the Mississippi River, such as willow and alder, are usually first to release pollen, typically peaking in late winter into March. The wooded areas near Giant City State Park woodlots then carry the tree pollen load into its sharpest phase, typically centered on April and May. Drier springs sometimes shorten the tree pollen window somewhat compared with wetter years.

The Edwardsville 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 Edwardsville, 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.