Miners Roost Boat-in Campground, Lewiston Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (7 October) pollen in Miners Roost Boat-in Campground, Lewiston is none.
Pollen Tomorrow
Tomorrow (8 October 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort and ragweed will increase; grass, mold (alternaria), and mold (cladosporium) will remain stable.
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Pollen Risk
Today - 7 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) | None | 0/100 |
| Alternaria | None | 0/100 |
| Cladosporium | None | 0/100 |
Tomorrow - 8 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) | None | 0/100 | |
| Alternaria | None | 0/100 | |
| Cladosporium | None | 0/100 |
Local Environmental Conditions
This location in Lewiston is surrounded mainly by open water, with a good deal of woodland. With much of the immediate area made up of open water, local pollen production is limited, though pollen can still drift in from surrounding land. Locally, the woodland makes trees an important source.
Across the year, woodland and street trees lead off, with tree pollen peaking around early spring. Grasses take over from mid-spring, with the highest levels around late spring and pollen lingering until midsummer. Weeds take the season into its final stretch, adding modest amounts of pollen from early summer into early fall. Here, winters average around 5°C and summers around 30°C, with most rain falling in the cooler months.
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Frequently Asked Questions About Pollen in California
Is pollen high in Lewiston right now?
Currently, there is no significant pollen in Lewiston.
Will pollen levels change in Lewiston tomorrow?
On 8 October 2026, pollen conditions in Lewiston will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Lewiston 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 Lewiston?
On 7 October 2026, there are no significant pollen types in Lewiston.
When is pollen season in Lewiston?
How often is the Lewiston pollen forecast updated?
The Lewiston pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Lewiston 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 Lewiston 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 Lewiston, 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. |
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).
