Rehoboth pollen forecast — Hillside Country Club neighborhood
Pollen Today
Today (20 September) pollen in Hillside Country Club, Rehoboth is low; grass and ragweed are low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass increasing, ragweed increasing, mugwort at low levels.
7-Day Trend
Over the next week grass, mugwort, and ragweed will decrease.
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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 | 19/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Low | 19/100 |
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) | Moderate | 29/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 9/100 | |
| Ragweed (Ambrosia) | Moderate | 30/100 |
Local Environmental Conditions
At Hillside Country Club, nearby, just around the area, along the damp banks, hazel and willow release some of the year's first tree pollen. Birch and oak share the canopy here, birch pollen in particular known to travel far on the wind; this sits close to this spot. Local readings for the surrounding area tend to follow this same general pattern.
In Hillside Country Club, the waterside hazel and willow are consistently first to release pollen each year, arriving ahead of the rest of the season, cresting around late winter. The area's oak and birch trees pollinate through mid-to-late spring, reaching maximum intensity across the April-May window. Grass pollen rises through late spring toward a June high point, and then ragweed picks up the slack, running from mid-August through October.
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Frequently Asked Questions About Pollen in Massachusetts
Is pollen high in Rehoboth right now?
On 20 September 2026, overall pollen levels in Rehoboth are low. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Rehoboth tomorrow?
On 21 September 2026, pollen conditions in Rehoboth will be different from today, with artemisia at low levels and ambrosia, grass increasing
Is pollen expected to decrease in Rehoboth this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Rehoboth?
On 20 September 2026, Ambrosia is the dominant pollen source in Rehoboth. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Rehoboth?
How often is the Rehoboth pollen forecast updated?
The Rehoboth pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Rehoboth 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 Rehoboth 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 Rehoboth, 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).
