Harrisburg pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Harrisburg is medium; ragweed is medium. Tomorrow (10 August 2026) levels are similar. Over the following five days ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Harrisburg's parks, including Riverfront Park and the Susquehanna River corridor, feature oak, maple, and ash as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. Surrounding Pennsylvania farmland and the wooded ridges of the Appalachian foothills contribute substantial tree and grass pollen, while the river valley channels airflows and concentrates pollen across the city.
Today - 9 August
-
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):
Medium
36/100
High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.
Tomorrow - 10 August
-
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):
Medium
34/100
Air quality in Harrisburg
View air qualityPollen forecast for neighborhoods and landmarks in Harrisburg
Frequently Asked Questions
Is pollen high in Harrisburg right now?
On 9 August 2026, overall pollen levels in Harrisburg are moderate. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Harrisburg tomorrow?
On 10 August 2026, pollen conditions in Harrisburg will be similar to today, with ambrosia at medium levels
Is pollen expected to decrease in Harrisburg 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 Harrisburg?
On 9 August 2026, Ambrosia is the dominant pollen source in Harrisburg. artemisia, cypress, and grass are not currently active.
When is pollen season in Harrisburg?
How often is the Harrisburg pollen forecast updated?
The Harrisburg pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Harrisburg 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 Harrisburg 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 Harrisburg, 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.
Want to see pollen forecasts for other cities in United States?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Harrisburg.
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Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.