Gien pollen forecast - today, tomorrow and the week ahead

Today (20 July) pollen in Gien is none Tomorrow (21 July 2026) levels are similar - grass at low levels, mugwort at low levels. Over the following five days mugwort 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

Use our Strava plugin to check your own exposure.

Gien's public gardens and the nearby Loire are lined with oak and plane, the main local tree pollen sources. Nearby Loire valley cereal farmland and vineyards add significant grass pollen exposure through the growing season, with the continental transitional climate influencing the intensity and timing of exposure.

Today - 20 July

  • 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

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 - 21 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    11/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    6/100

Air quality in Gien

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Frequently Asked Questions

Is pollen high in Gien right now?

Currently, there is no significant pollen in Gien.

Will pollen levels change in Gien tomorrow?

On 21 July 2026, pollen conditions in Gien will be different from today, with artemisia at low levels, grass at low levels

Is pollen expected to decrease in Gien this week?

According to the five-day outlook, 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 Gien?

On 20 July 2026, there are no significant pollen types in Gien.

When is pollen season in Gien?
In Gien, the pollen season typically opens in January with hazel and alder, before giving way to oak and plane, which peaks in April and May, before grass and cereal crops then carries the season into early summer, typical of this continental transitional part of France.
How often is the Gien pollen forecast updated?

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

Does pollen in Gien 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 Gien 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 Gien, 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 France?

Check pollen in other popular cities:

Data provided by Airmine — Last update: 20 July 2026 at 16:32 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Gien.

For long term forecasts and maps, see the Airmine app

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.