New Haven pollen forecast — East Rock neighborhood

Today (27 August) pollen in East Rock, New Haven is high; ragweed is high; grass is moderate; mugwort is low. Tomorrow (28 August 2026) levels are similar - grass remains moderate, ragweed remains high, mugwort increasing. Over the following five days grass and ragweed will increase; mugwort will decrease. 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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East Rock is an elm City — though actual elms are now rare. Mixed oak and maple line the Yale campus and residential streets. Tree pollen peaks in late April. Long Island Sound breezes offer occasional respite.

Today - 27 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Moderate

    28/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    24/100

  • Ragweed (Ambrosia):

    High

    69/100

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 - 28 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Moderate

    36/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Moderate

    31/100

  • Ragweed (Ambrosia):

    High

    70/100

Other Landmarks in New Haven

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Frequently Asked Questions

Is pollen high in New Haven right now?

On 27 August 2026, overall pollen levels in New Haven are high. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels

Will pollen levels change in New Haven tomorrow?

On 28 August 2026, pollen conditions in New Haven will be different from today, with grass at moderate levels, ambrosia at high levels and artemisia increasing

Is pollen expected to decrease in New Haven this week?

According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while grass and ambrosia pollen will increase, suggesting mixed conditions later in the week.

Which pollen types are currently active in New Haven?

On 27 August 2026, Ambrosia is the dominant pollen source in New Haven. grass and artemisia are also present but at lower levels. cypress are not currently active.

When is pollen season in New Haven?
Situated a neighborhood in New Haven, East Rock shares the area's pollen timeline, beginning with maple and elm in March before birch and oak extends the tree season through April and May. Peak grass pollen arrives in June and July, and mugwort and nettle extend exposure into September. A relatively short growing season compresses tree, grass, and weed pollen into a more intense stretch, a defining feature of the local season.
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.

Want to see pollen forecasts for other cities in United States?

Check pollen in other popular cities:

Data provided by Airmine — Last update: 27 August 2026 at 04:00 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for East Rock, New Haven.

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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.

Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.