Lahti pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in Lahti is high; cypress and grass are high; birch is low. Tomorrow (26 June 2026) levels are similar. Over the following five days birch, cypress, and 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
Lahti's parks and the Lake Vesijärvi corridor feature birch, pine, and alder as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. Surrounding Finnish lake district woodland and farmland contribute substantial tree and grass pollen, while the lake position means onshore breezes can periodically disperse pollen and birch is particularly significant during the intense spring peak.
Today - 25 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
Low
16/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
High
70/100
-
Grass (Poaceae):
High
53/100
-
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):
Low
21/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
High
70/100
-
Grass (Poaceae):
High
58/100
-
Willow (Salicaceae):
None
0/100
Frequently Asked Questions
Is pollen high in Lahti right now?
On 25 June 2026, overall pollen levels in Lahti are high. Grass is the main contributor to airborne pollen, while cypress and birch remain at lower levels
Will pollen levels change in Lahti tomorrow?
On 26 June 2026, pollen conditions in Lahti will be similar to today, with grass at high levels, birch at low levels, cypress at high levels
Is pollen expected to decrease in Lahti this week?
According to the five-day outlook, grass, birch, and cypress pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Lahti?
On 25 June 2026, Grass is the dominant pollen source in Lahti. cypress and birch are also present but at lower levels. willow, alder, and hazel are not currently active.
When is pollen season in Lahti?
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: 25 Jun 2026, 09:01 CET (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
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.