Des Moines pollen forecast — Historic Valley Junction neighborhood

Currently, there is no significant pollen in Des Moines.

On 2 August 2026, pollen conditions in Des Moines will be different from today, with ambrosia at low levels, artemisia at low levels, grass at low levels

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

On 1 August 2026, there are no significant pollen types in Des Moines.

At Historic Valley Junction, a neighborhood in Des Moines, the pollen season opens with elm and cottonwood from March before ash peaks during April. Grass pollen rises through May and June, and a strong ragweed peak follows in late summer into September. Surrounding farmland is a major contributor to both the spring grass peak and the late-summer ragweed season throughout the year.

The Des Moines 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 Des Moines, 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.