Upper Darby pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Upper Darby is low; mugwort and ragweed are low. Tomorrow (10 August 2026) levels are similar - mugwort remains low, ragweed increasing, grass at low levels. Over the following five days grass, mugwort, and 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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Upper Darby's parks and the Darby Creek corridor feature oak, maple, and ash as the main tree pollen sources, with exposure varying between these green areas and the more built-up areas. Surrounding Delaware County woodland and farmland contribute substantial tree and grass pollen, while the flat coastal plain landscape allows pollen to disperse readily across the greater Philadelphia metropolitan area.
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
1/100
-
Ragweed (Ambrosia):
Low
10/100
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
4/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
7/100
-
Ragweed (Ambrosia):
Medium
41/100
Air quality in Upper Darby
View air qualityFrequently Asked Questions
Is pollen high in Upper Darby right now?
On 9 August 2026, overall pollen levels in Upper Darby are low. Artemisia is the main contributor to airborne pollen, while ambrosia remain at lower levels
Will pollen levels change in Upper Darby tomorrow?
On 10 August 2026, pollen conditions in Upper Darby will be different from today, with artemisia at low levels, grass at low levels and ambrosia increasing
Is pollen expected to decrease in Upper Darby this week?
According to the five-day outlook, artemisia, grass, and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Upper Darby?
On 9 August 2026, Artemisia is the dominant pollen source in Upper Darby. ambrosia are also present but at lower levels. cypress and grass are not currently active.
When is pollen season in Upper Darby?
How often is the Upper Darby pollen forecast updated?
The Upper Darby pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Upper Darby 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 Upper Darby 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 Upper Darby, 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 Upper Darby.
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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.