Union City, New Jersey pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Union City, New Jersey is moderate; grass and ragweed are moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort will increase; grass and ragweed will decrease.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | None | 0/100 |
| Grass (Poaceae) | Moderate | 48/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Moderate | 47/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | — |
| Grass (Poaceae) | Moderate | 46/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 44/100 |
Local Environmental Conditions
Union City's Hudson County New Jersey waterfront setting features oak, sweetgum, and maple as the main tree pollen sources, with exposure varying between the limited green residential areas on the Palisades ridge top and the more built-up commercial corridors below. The Palisades ridge creates a distinct elevation-based pollen gradient between the ridge top and the Hudson waterfront below, while the urban setting means most pollen is carried in from surrounding greener areas.
Union City's Hudson County New Jersey setting across from Manhattan produces a season opening in March with elm and maple before oak peaks through April and May. Grass from surrounding New York and New Jersey land peaks through June and July before mugwort and nettle extend exposure into September. The urban Hudson River waterfront setting means much pollen is carried in from surrounding greener areas.
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Frequently Asked Questions About Pollen in New Jersey
Is pollen high in Union City, New Jersey right now?
On 20 September 2026, overall pollen levels in Union City, New Jersey are moderate. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Union City, New Jersey tomorrow?
On 21 September 2026, pollen conditions in Union City, New Jersey will be similar to today, with ambrosia at moderate levels, grass at moderate levels
Is pollen expected to decrease in Union City, New Jersey this week?
According to the five-day outlook, ambrosia and grass pollen levels are expected to gradually decrease, while artemisia pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Union City, New Jersey?
On 20 September 2026, Ambrosia is the dominant pollen source in Union City, New Jersey. grass are also present but at lower levels. artemisia are not currently active.
When is pollen season in Union City, New Jersey?
How often is the Union City, New Jersey pollen forecast updated?
The Union City, New Jersey pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Union City, New Jersey 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 City, New Jersey 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 City, New Jersey, 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.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
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Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
