Lahti pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Lahti is medium; cypress is medium; grass is low. Tomorrow (17 July 2026) levels are similar - cypress increasing, grass increasing, mugwort at low levels. Over the following five days cypress, grass, and mugwort 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.

Lahti's parks and the Lake Vesijärvi corridor birch and pine make up most of local tree pollen, and grass from surrounding farmland extends it into early summer. Boreal forest cover across Päijät-Häme keeps background levels up.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Medium

    44/100

  • Grass (Poaceae):

    Low

    12/100

  • 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 - 17 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    High

    61/100

  • Grass (Poaceae):

    Medium

    29/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    8/100

Air quality in Lahti

View air quality

Frequently Asked Questions

Is pollen high in Lahti right now?

On 16 July 2026, overall pollen levels in Lahti are moderate. Cypress is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in Lahti tomorrow?

On 17 July 2026, pollen conditions in Lahti will be different from today, with artemisia at low levels and cypress, grass increasing

Is pollen expected to decrease in Lahti this week?

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

Which pollen types are currently active in Lahti?

On 16 July 2026, Cypress is the dominant pollen source in Lahti. grass are also present but at lower levels. willow, alder, artemisia, birch, and hazel are not currently active.

When is pollen season in Lahti?
Lahti's pollen season runs from February through August, starting later than further south and led by a strong birch peak in late spring, with grass following into early summer. Lake and coastal breezes can periodically help clear pollen during the peak weeks.
How often is the Lahti pollen forecast updated?

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

Does pollen in Lahti 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 Lahti 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 Lahti, 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 Finland?

Check pollen in other popular cities:

Data provided by Airmine — Last update: 16 July 2026 at 05:36 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Lahti.

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.