Yale University Campus, New Haven Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (6 October) pollen in Yale University Campus, New Haven is low; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (7 October 2026) mold (alternaria) remains low, mold (cladosporium) remains low, grass at moderate levels, mugwort at low levels, ragweed at moderate levels.
7-Day Trend
Over the next week grass, mugwort, ragweed, mold (alternaria), and mold (cladosporium) will decrease.
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Pollen Risk
Today - 6 October
| 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) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | None | 0/100 |
| Alternaria | Low | 5/100 |
| Cladosporium | Low | 14/100 |
Tomorrow - 7 October
| 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 | 29/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Low | 22/100 | |
| Ragweed (Ambrosia) | Moderate | 38/100 | |
| Alternaria | Low | 7/100 | |
| Cladosporium | Low | 18/100 |
Local Environmental Conditions
The landscape around this site in New Haven is densely built up, with some woodland. Among allergenic trees nearby, oak leads, followed by maple and birch. Grasses and weeds such as mugwort and plantain round out the local mix. Around here, planted trees and mown lawns are the main sources in the built-up parts.
Oak, maple and birch lead the season in late spring, as temperatures climb to around 15°C, and tree pollen reaches its peak. Grass pollen follows, peaking in early summer and easing off by early fall. Later, mugwort and plantain keep weed pollen in the air from midsummer into early fall. By late fall, as temperatures fall to around 5°C, pollen levels are low again.
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Resource Hub
Pollen forecast neighborhoods 10 neighborhoods
Sports venues in New Haven 1 sports venue
Frequently Asked Questions About Pollen in Connecticut
Is pollen high in New Haven right now?
Currently, there is no significant pollen in New Haven.
Will pollen levels change in New Haven tomorrow?
On 7 October 2026, pollen conditions in New Haven will be different from today, with ambrosia at moderate levels, artemisia at low levels, grass at moderate levels
Is pollen expected to decrease in New Haven this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in New Haven?
On 6 October 2026, there are no significant pollen types in New Haven.
When is pollen season in New Haven?
How often is the New Haven pollen forecast updated?
The New Haven pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in New Haven 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 New Haven 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 New Haven, 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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. |
Get More in the Airmine Pollen app
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).
