Mount Washington Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Mount Washington is low; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (11 October 2026) mold (alternaria) remains low, mold (cladosporium) remains low, grass at low levels, mugwort at low levels, ragweed at low levels.
7-Day Trend
Over the next week grass, mugwort, ragweed, and mold (alternaria) will increase; mold (cladosporium) will decrease.
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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) | None | 0/100 |
| Mold (Alternaria) | Low | 3/100 |
| Mold (Cladosporium) | Low | 21/100 |
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) | Low | 2/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 2/100 | |
| Ragweed (Ambrosia) | Low | 4/100 | |
| Mold (Alternaria) | Low | 2/100 | |
| Mold (Cladosporium) | Low | 15/100 |
Local Environmental Conditions
The heart of Mount Washington is heavily wooded. Oak, birch and maple are among the allergenic trees nearby. Grass pollen adds noticeably to the overall load. Undergrowth, clearings and woodland edges add smaller amounts of grass and herb pollen. Much of the pollen in dense woodland is released high in the canopy, where the wind carries it easily.
Oak, birch and maple lead the season in late spring, as temperatures climb to around 15°C, and tree pollen reaches its peak. Then come the grasses, strongest in early summer and fading by early fall. Weeds on open ground add a smaller late peak from early summer into early fall. By late fall, as temperatures fall to around 5°C, pollen levels are low again.
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Pollen forecast neighborhoods 4 neighborhoods
Frequently Asked Questions About Pollen in Massachusetts
Is pollen high in Mount Washington right now?
Currently, there is no significant pollen in Mount Washington.
Will pollen levels change in Mount Washington tomorrow?
On 11 October 2026, pollen conditions in Mount Washington will be different from today, with ambrosia at low levels, artemisia at low levels, grass at low levels
Is pollen expected to decrease in Mount Washington 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 Mount Washington?
On 10 October 2026, there are no significant pollen types in Mount Washington.
When is pollen season in Mount Washington?
How often is the Mount Washington pollen forecast updated?
The Mount Washington pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Mount Washington 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 Mount Washington 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 Mount Washington, 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).
