Pollen Count
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Pollen Counts in Czechia

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Check daily pollen forecasts, the pollen map, seasonal trends, and all the cities we cover in Czechia. Forecasts update every day, so check back regularly during pollen season.

Updated: 1 Nov 2026.

Czechia Pollen Map

This map shows daily forecasts for the cities we cover in Czechia, updated every day.

Czechia's Pollen Seasons

In Czechia, tree pollen starts with alder in March. Birch follows in April, when pollen levels are busiest. Birch pollen is also the most common type in yearly records, so April can be difficult for people with allergies.

Grass pollen season is measured mainly in June and July. Many grasses release their pollen during these summer months. The season can overlap with pollen from other plants, so people with allergies may notice more than one kind.

Weed pollen comes later: mugwort is measured from July through September, while ragweed appears in August and September. These late-summer months can bring several kinds of pollen at once, including grass pollen in July too.

The records also show olive pollen in June. This is separate from the main tree timing of alder in March and birch in April. Together, these recorded seasons stretch from early spring into autumn in Czechia.

Pollen Calendar for Czechia

Typical pollen calendar for Czechia, averaged across 49 cities from previous years. Alder peaks in March, Birch peaks in April, Grass peaks in June, Mugwort peaks in August, Ragweed peaks in September. Use it to see which months each pollen type usually rises and falls.

  Alder Birch Grass Mugwort Olive Ragweed
Jan 2.9 0 0 0 0 0
Feb 44 0 0 0 0 0
Mar 788.7 324.1 0.2 0 0 0
Apr 4.6 2459.8 18.6 0 0.6 0
May 0.3 72.3 158.4 0 0.3 0
Jun 0 2.4 864 0.3 1.8 0
Jul 0 0.3 331.7 51.5 0 0
Aug 0 0 90.6 107 0 69.5
Sep 0 0 10.8 40.9 0 97.4
Oct 0 0 0.8 2 0 0
Nov 0 0 0 0 0 0
Dec 0 0 0 0 0 0

Values in gr/m³ (pollen grains per cubic metre), averaged across covered cities. Local microclimates vary. Not medical advice.

Places We Cover in Czechia

We publish forecasts for these cities across Czechia. Check the list to see what is near you, or view them on the Czechia Pollen Map above.

Central Bohemia

Karlovarský kraj

Liberecký kraj

Moravian-Silesian Region

Moravskoslezský kraj

Olomouc Region

Olomoucký kraj

Other

Plzeň Region

Plzeňský kraj

South Bohemian Region

South Moravian

Vysocina

Zlín

Ústecký kraj

Ústí nad Labem Region

Pollen information is for education and planning only. This is not medical advice. Consult a qualified healthcare provider about symptoms or treatment.

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