Bologna pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Bologna is medium; grass is medium. Tomorrow (26 June 2026) levels are similar - grass increasing. Over the following five days 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

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Bologna's parks and the Reno River corridor feature oak, plane, and hornbeam as the main tree pollen sources, with exposure varying between green areas and the more built-up city centre. Surrounding Po Valley farmland contributes substantial grass and crop pollen, while the enclosed basin setting between the Apennines and the Alps concentrates pollen under calm conditions and southerly winds.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Medium

    44/100

  • Willow (Salicaceae):

    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 - 26 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    High

    54/100

  • Willow (Salicaceae):

    None

    0/100

Frequently Asked Questions

Is pollen high in Bologna right now?

On 25 June 2026, overall pollen levels in Bologna are moderate. Grass is the main contributor to airborne pollen

Will pollen levels change in Bologna tomorrow?

On 26 June 2026, pollen conditions in Bologna will be different from today, with grass increasing

Is pollen expected to decrease in Bologna this week?

According to the five-day outlook, grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.

Which pollen types are currently active in Bologna?

On 25 June 2026, Grass is the dominant pollen source in Bologna. alder, birch, hazel, cypress, and willow are not currently active.

When is pollen season in Bologna?
Bologna's pollen season runs from January through June, opening with hazel and alder in late winter before birch and plane peak through April and May. Grass pollen from the surrounding Po Valley farmland peaks through May and June. The enclosed Po Valley basin setting concentrates pollen under calm conditions, while the Apennine foothills to the south contribute additional tree pollen. The hot, dry summer ends the season abruptly by June.
How often is the Bologna pollen forecast updated?

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

Does pollen in Bologna 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 Bologna 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 Bologna, 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 Italy?

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Check pollen in other popular cities:

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Data provided by Airmine — Last update: 25 Jun 2026, 09:00 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Bologna.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

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