Downtown Fremont pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Downtown Fremont is moderate; ragweed is moderate; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week grass, mugwort, and ragweed will increase.
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Features and forecast availability vary by region.
Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | None | 0/100 |
| Grass (Poaceae) | Low | 7/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Moderate | 34/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | — |
| Grass (Poaceae) | Low | 14/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 41/100 |
Local Environmental Conditions
Downtown Fremont occupies the city's compact downtown near the Platte River, and its plant life mirrors the rest of Fremont, so seasonal pollen sources here match the broader regional pattern. Exposure here depends mainly on how much tree and lawn cover surrounds the immediate site.
At Downtown Fremont, a neighborhood in Fremont, the pollen season opens with elm and cottonwood from March before ash peaks during April. Grass pollen builds through May and June, and ragweed pollen builds through late summer into September. The continental climate and surrounding farmland drive a well-defined spring tree peak and a strong late-summer ragweed season, which shapes conditions at Downtown Fremont much as it does elsewhere in Fremont.
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Frequently Asked Questions About Pollen in Nebraska
Is pollen high in Downtown Fremont right now?
On 20 September 2026, overall pollen levels in Downtown Fremont are moderate. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Downtown Fremont tomorrow?
On 21 September 2026, pollen conditions in Downtown Fremont will be similar to today, with ambrosia at moderate levels, grass at low levels
Is pollen expected to decrease in Downtown Fremont this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Downtown Fremont?
On 20 September 2026, Ambrosia is the dominant pollen source in Downtown Fremont. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Downtown Fremont?
How often is the Downtown Fremont pollen forecast updated?
The Downtown Fremont pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Downtown Fremont come from nearby or far away?
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.
Are pollen levels in Downtown Fremont based on measurements or forecasts?
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 Downtown Fremont, 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.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
Get More in the Airmine Pollen app
Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
