Missoula pollen forecast — Missoula Carousel neighborhood

On 16 July 2026, overall pollen levels in Missoula are high. Grass is the main contributor to airborne pollen, while ambrosia remain at lower levels

On 17 July 2026, pollen conditions in Missoula will be different from today, with ambrosia at low levels and grass continuing to decline

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

On 16 July 2026, Grass is the dominant pollen source in Missoula. ambrosia are also present but at lower levels. oak, willow, alder, artemisia, birch, and cypress are not currently active.

Missoula Carousel, a landmark in Missoula, opens its pollen season with juniper and cottonwood from March then ash builds through April. Grass follows, peaking through May and June, while grass pollen lingers into early September before tapering off. The semi-arid high-elevation climate means fewer rainfall interruptions than in wetter US regions throughout the year.

The Missoula 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 Missoula, 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.