Hanover pollen forecast - today, tomorrow and the week ahead

Today (30 August) pollen in Hanover is high; grass and ragweed are high; mugwort is moderate. Tomorrow (31 August 2026) levels are similar - ragweed remains high, grass declining, mugwort declining. 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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The vegetation around Hanover, on hills above the Connecticut River valley, is dominated by sugar maple and white pine and paper birch, with eastern hemlock adding further seasonal pollen exposure. Seasonal timing here follows the broader regional pattern typical of this part of the country. The mix of native and introduced species here is fairly typical for this part of the country.

Today - 30 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    High

    51/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Moderate

    26/100

  • Ragweed (Ambrosia):

    High

    70/100

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 - 31 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Moderate

    39/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    14/100

  • Ragweed (Ambrosia):

    High

    70/100

Air quality in Hanover

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Frequently Asked Questions

Is pollen high in Hanover right now?

On 30 August 2026, overall pollen levels in Hanover are high. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels

Will pollen levels change in Hanover tomorrow?

On 31 August 2026, pollen conditions in Hanover will be different from today, with ambrosia at high levels and artemisia, grass continuing to decline

Is pollen expected to decrease in Hanover this week?

According to the five-day outlook, ambrosia, artemisia, and grass pollen levels will increase later in the week.

Which pollen types are currently active in Hanover?

On 30 August 2026, Ambrosia is the dominant pollen source in Hanover. grass and artemisia are also present but at lower levels. cypress are not currently active.

When is pollen season in Hanover?
Pollen season in Hanover starts with maple and elm in March with birch and oak following close behind through April and May. A grass pollen peak follows through June and July; ragweed and mugwort keep weed pollen elevated into September. A relatively short growing season compresses tree, grass, and weed pollen into a more intense stretch, shaping conditions across the city.
How often is the Hanover pollen forecast updated?

The Hanover pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in Hanover 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 Hanover 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 Hanover, 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?

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Data provided by Airmine — Last update: 30 August 2026 at 14:32 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Hanover.

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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.