East Pennsboro Township pollen forecast — West Creek Hills neighborhood
Pollen Today
Today (20 September) pollen in West Creek Hills, East Pennsboro Township is moderate; grass and ragweed are moderate; mugwort is low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass declining, ragweed declining, 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) | Moderate | 40/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Low | 14/100 |
| Ragweed (Ambrosia) | Moderate | 44/100 |
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 | 5/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 9/100 |
Local Environmental Conditions
Here, within the local area, a waterway supports hazel and willow along its bank, both strongly allergenic wind-pollinated species. A stand of oak and birch, the latter ranked among the region's most potent tree allergens, within the local area. Located near this part of town, this area has a park whose turf grass and ornamental plantings feed local grass and ragweed pollen levels.
The water-adjacent hazel and willow are early risers, usually the first pollen source active, peaking sometime in February or March. As spring advances, oak and birch in the nearby woodland become the dominant source, typically the year's sharpest tree-pollen spell, centered on April and May. Grass pollen takes over next, building to a peak around June, before ragweed takes over as the dominant allergen from mid-August through October.
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Frequently Asked Questions About Pollen in Pennsylvania
Is pollen high in East Pennsboro Township right now?
On 20 September 2026, overall pollen levels in East Pennsboro Township are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels
Will pollen levels change in East Pennsboro Township tomorrow?
On 21 September 2026, pollen conditions in East Pennsboro Township will be different from today, with ambrosia, grass continuing to decline
Is pollen expected to decrease in East Pennsboro 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 Pennsboro Township?
On 20 September 2026, Ambrosia is the dominant pollen source in East Pennsboro Township. grass and artemisia are also present but at lower levels.
When is pollen season in East Pennsboro Township?
How often is the East Pennsboro Township pollen forecast updated?
The East Pennsboro Township pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in East Pennsboro 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 Pennsboro 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 Pennsboro 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).
