Harrisonburg pollen forecast - today, tomorrow and the week ahead
Today (16 July) pollen in Harrisonburg is medium; grass is medium; ragweed is low. Tomorrow (17 July 2026) levels are similar - grass declining. Over the following five days grass and ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Harrisonburg's Shenandoah Valley setting features oak, maple, and hickory as the main tree pollen sources, with exposure varying between the forested Massanutten Mountain to the east and the Allegheny foothills to the west and the more open valley floor commercial and university areas. The enclosed valley creates distinct pollen concentration zones, while the Blue Ridge and Allegheny ridgeline forests contribute substantially more tree pollen than the open valley floor.
Today - 16 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Medium
29/100
-
Oak (Quercus):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
Low
4/100
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 - 17 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
8/100
-
Oak (Quercus):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
-
Ragweed (Ambrosia):
None
0/100
Air quality in Harrisonburg
View air qualityFrequently Asked Questions
Is pollen high in Harrisonburg right now?
On 16 July 2026, overall pollen levels in Harrisonburg are moderate. Grass is the main contributor to airborne pollen, while ambrosia remain at lower levels
Will pollen levels change in Harrisonburg tomorrow?
On 17 July 2026, pollen conditions in Harrisonburg will be different from today, with grass continuing to decline
Is pollen expected to decrease in Harrisonburg this week?
According to the five-day outlook, grass and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Harrisonburg?
On 16 July 2026, Grass is the dominant pollen source in Harrisonburg. ambrosia are also present but at lower levels. cypress, oak, willow, alder, artemisia, and birch are not currently active.
When is pollen season in Harrisonburg?
How often is the Harrisonburg pollen forecast updated?
The Harrisonburg pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Harrisonburg 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 Harrisonburg 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 Harrisonburg, 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: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Harrisonburg.
For long term forecasts and maps, see the Airmine app
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.