Dayton pollen forecast — Walnut Hills neighborhood
Today (9 August) pollen in Walnut Hills, Dayton is medium; ragweed is medium; mugwort is low. Tomorrow (10 August 2026) levels are similar - mugwort remains low, ragweed remains medium, grass at low levels. Over the following five days mugwort and ragweed will increase; grass will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
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This area, reasonably near, about 600-700 meters out, has hazel and willow grow along the bank, contributing some of the season's earliest allergenic pollen. A mix of oak and birch trees, birch in particular a notorious spring allergen source, not far off, about 300m out. Parkland with regularly mown grass and planted trees, both sources of grass and ragweed pollen, right at hand, some 100m away.
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):
Low
4/100
-
Ragweed (Ambrosia):
Medium
29/100
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):
Low
9/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
14/100
-
Ragweed (Ambrosia):
Medium
41/100
Other Landmarks in Dayton
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Frequently Asked Questions
Is pollen high in Dayton right now?
On 9 August 2026, overall pollen levels in Dayton are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia remain at lower levels
Will pollen levels change in Dayton tomorrow?
On 10 August 2026, pollen conditions in Dayton will be different from today, with ambrosia at medium levels, artemisia at low levels, grass at low levels
Is pollen expected to decrease in Dayton this week?
According to the five-day outlook, grass pollen levels are expected to gradually decrease, while ambrosia and artemisia pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Dayton?
On 9 August 2026, Ambrosia is the dominant pollen source in Dayton. artemisia are also present but at lower levels. cypress and grass are not currently active.
When is pollen season in Dayton?
How often is the Dayton pollen forecast updated?
The Dayton pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Dayton 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 Dayton 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 Dayton, 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?
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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 Walnut Hills, Dayton.
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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.