Karlštejn pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Karlštejn is high; mugwort is high; grass is low. Tomorrow (10 August 2026) levels are similar - mugwort remains high, grass increasing. 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.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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In Central Bohemian Region, Karlštejn lies in the Berounka river valley beneath Karlštejn Castle; local vegetation is dominated by oak and hornbeam, and grass pollen from the wider countryside pushes totals higher as spring turns to summer. Exposure differs meaningfully between the town centre and its greener edges, with the surrounding Central Bohemian Region land contributing an additional, steadier layer of grass pollen through the warmer months.
Today - 9 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
24/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
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 - 10 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Medium
26/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
High
70/100
Air quality in Karlštejn
View air qualitySports venues in Karlštejn
Frequently Asked Questions
Is pollen high in Karlštejn right now?
On 9 August 2026, overall pollen levels in Karlštejn are high. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Karlštejn tomorrow?
On 10 August 2026, pollen conditions in Karlštejn will be different from today, with artemisia at high levels and grass increasing
Is pollen expected to decrease in Karlštejn 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 Karlštejn?
On 9 August 2026, Artemisia is the dominant pollen source in Karlštejn. grass are also present but at lower levels. hazel, cypress, and willow are not currently active.
When is pollen season in Karlštejn?
How often is the Karlštejn pollen forecast updated?
The Karlštejn pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Karlštejn 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 Karlštejn 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 Karlštejn, 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 Czechia?
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Karlštejn.
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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.