Lafayette, Colorado Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Lafayette, Colorado is moderate; mold (alternaria) and mold (cladosporium) are moderate; ragweed is low.
Pollen Tomorrow
Tomorrow (11 October 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort and ragweed will increase; mold (alternaria) and mold (cladosporium) will decrease; grass will remain stable.
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Pollen Risk
Today - 10 October
| 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) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Low | 16/100 |
| Mold (Alternaria) | Moderate | 39/100 |
| Mold (Cladosporium) | Moderate | 38/100 |
Tomorrow - 11 October
| 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) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 11/100 | |
| Mold (Alternaria) | Moderate | 33/100 | |
| Mold (Cladosporium) | Moderate | 38/100 |
Local Environmental Conditions
The area around the heart of Lafayette, Colorado is mostly built-up land, with a good deal of woodland. Close to the Wabash River, riverside trees such as willow and poplar add to local tree pollen. Of the allergenic trees nearby, poplar matters most, while willow also contributes. Grasses and weeds such as pigweed round out the local mix.
Poplar and willow lead the season in early spring, as temperatures climb to around 5°C, and tree pollen reaches its peak. Grasses take over in early summer, with temperatures around 20°C, and their pollen lingers into early fall. Later, pigweed keeps weed pollen in the air from early summer into early fall. Rain is heaviest in spring, often giving short breaks from high pollen levels.
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Frequently Asked Questions About Pollen in Colorado
Is pollen high in Lafayette, Colorado right now?
On 10 October 2026, overall pollen levels in Lafayette, Colorado are low. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Lafayette, Colorado tomorrow?
On 11 October 2026, pollen conditions in Lafayette, Colorado will be similar to today, with ambrosia at low levels
Is pollen expected to decrease in Lafayette, Colorado this week?
According to the five-day outlook, ambrosia and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Lafayette, Colorado?
On 10 October 2026, Ambrosia is the dominant pollen source in Lafayette, Colorado. artemisia and grass are not currently active.
When is pollen season in Lafayette, Colorado?
How often is the Lafayette, Colorado pollen forecast updated?
The Lafayette, Colorado pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Lafayette, Colorado 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 Lafayette, Colorado 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 Lafayette, Colorado, 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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. |
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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).
