Cheyenne pollen forecast — Cheyenne Depot Museum neighborhood

On 16 July 2026, overall pollen levels in Cheyenne are moderate. Grass is the main contributor to airborne pollen, while oak and ambrosia remain at lower levels

On 17 July 2026, pollen conditions in Cheyenne will be different from today, with grass at medium levels, ambrosia at low levels

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

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

Cheyenne Depot Museum sees the same pollen timeline as the rest of Cheyenne, beginning with juniper and cottonwood in March then ash follows, running through April. Grass pollen then peaks through May and June, and sagebrush and ragweed extend the season into September. Low humidity and high elevation mean pollen disperses easily once released, a defining feature of the local season.

The Cheyenne 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 Cheyenne, 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.