Watertown pollen forecast — Mount Auburn neighborhood
Pollen Today
Today (2 September) pollen in Mount Auburn, Watertown is high; ragweed is high; grass is moderate; mugwort is low.
Pollen Tomorrow
Tomorrow (3 September 2026) levels are similar to today.
7-Day Trend
Over the next week grass and ragweed will increase; mugwort will decrease; cypress will remain stable.
Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset. Airmine's estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily. Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS) team.
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Air Quality
Air Quality Forecast for Watertown AQI today AQI tomorrowPollen for Neighborhoods
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Pollen Risk
Today - 2 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) | Moderate | 39/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 15/100 |
| Ragweed (Ambrosia) | High | 70/100 |
Tomorrow - 3 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) | Moderate | 41/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 16/100 | |
| Ragweed (Ambrosia) | High | 70/100 |
Local Environmental Conditions
Nearby, near this part of town, the nearest stream or river hosts hazel and willow, two of the most allergenic early-season trees. A canopy of oak and birch, birch chief among them for allergenic potency here; this sits close to home here. This area, within the neighborhood, has a park where mown turf grass and ornamental trees add grass and ragweed pollen.
The water-adjacent hazel and willow are early risers, getting an early start, typically cresting between February and March. Oak and birch in the nearby woodland follow in mid-to-late spring, climbing steadily through spring to a peak in April or May. Moving into early summer, grass pollen climbs to its seasonal high in June, then gives way to ragweed, which drives the season's second major surge from mid-August into October.
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Resource Hub
Pollen forecast neighborhoods 3 neighborhoods
Sports venues in Watertown 1 sports venue
Frequently Asked Questions About Pollen in Massachusetts
Is pollen high in Watertown right now?
On 2 September 2026, overall pollen levels in Watertown are high. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in Watertown tomorrow?
On 3 September 2026, pollen conditions in Watertown will be similar to today, with grass at moderate levels, ambrosia at high levels, artemisia at low levels
Is pollen expected to decrease in Watertown this week?
According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while grass and ambrosia pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Watertown?
On 2 September 2026, Ambrosia is the dominant pollen source in Watertown. grass and artemisia are also present but at lower levels. cypress are not currently active.
When is pollen season in Watertown?
How often is the Watertown pollen forecast updated?
The Watertown pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Watertown 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 Watertown 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 Watertown, 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 exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen 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).
