East Deer Township pollen forecast — Glassmere neighborhood
Pollen Today
Today (20 September) pollen in Glassmere, East Deer Township is low; grass, mugwort, and ragweed are low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass remains low, ragweed remains low, mugwort no longer expected.
7-Day Trend
Over the next week grass, mugwort, and ragweed will increase.
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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 | 25/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 3/100 |
| Ragweed (Ambrosia) | Low | 25/100 |
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) | Low | 1/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 1/100 |
Local Environmental Conditions
Nearby, within the neighborhood's edge, a stretch of hazel and willow lines the water, feeding some of spring's earliest pollen. Nearby, near this part of town, birch and oak share the canopy here, birch pollen in particular known to travel far on the wind. This area, a short distance from here, has grass and ornamental trees within the park boundary contribute modestly to grass and ragweed levels.
Along the waterway, hazel and willow release pollen first, starting well before the main spring rush, topping out around March. Oak and birch nearby take over the pollen calendar through mid-spring, typically landing in April and May. By late spring, grass pollen is climbing steadily toward a June high point, followed by ragweed's own peak stretch from mid-August into October.
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Pollen forecast neighborhoods 4 neighborhoods
Frequently Asked Questions About Pollen in Pennsylvania
Is pollen high in East Deer Township right now?
On 20 September 2026, overall pollen levels in East Deer Township are low. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels
Will pollen levels change in East Deer Township tomorrow?
On 21 September 2026, pollen conditions in East Deer Township will be different from today, with ambrosia at low levels, grass at low levels
Is pollen expected to decrease in East Deer Township 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 East Deer Township?
On 20 September 2026, Ambrosia is the dominant pollen source in East Deer Township. artemisia and grass are also present but at lower levels.
When is pollen season in East Deer Township?
How often is the East Deer Township pollen forecast updated?
The East Deer Township pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in East Deer Township 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 East Deer Township 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 East Deer Township, 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. |
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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).
