Union pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in Union is low; grass is low. Tomorrow (26 June 2026) levels are similar - grass remains low, cypress at low levels. Over the following five days cypress will increase; grass will decrease. 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
Union's Union County New Jersey setting features oak, maple, and tulip poplar as the main tree pollen sources, with exposure varying between the wooded Nomahegan Park and Rahway River corridor areas and the more built-up commercial corridors along Morris Avenue. The Rahway River corridor and Nomahegan Park provide locally significant green space, while the moderate mid-Atlantic setting allows the substantial residential tree canopy to contribute significant local pollen during spring.
Today - 25 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
20/100
-
Willow (Salicaceae):
None
0/100
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 - 26 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
2/100
-
Grass (Poaceae):
Low
20/100
-
Willow (Salicaceae):
None
0/100
Frequently Asked Questions
Is pollen high in Union right now?
On 25 June 2026, overall pollen levels in Union are low. Grass is the main contributor to airborne pollen
Will pollen levels change in Union tomorrow?
On 26 June 2026, pollen conditions in Union will be different from today, with grass at low levels, cypress at low levels
Is pollen expected to decrease in Union this week?
According to the five-day outlook, grass pollen levels are expected to gradually decrease, while cypress pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Union?
On 25 June 2026, Grass is the dominant pollen source in Union. willow, hazel, and cypress are not currently active.
When is pollen season in Union?
How often is the Union pollen forecast updated?
The Union pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Union 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 Union 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 Union, 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: 25 Jun 2026, 09:00 CET (Data is updated four times daily.)
This page provides the latest public pollen forecast for Union.
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
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.