Pollen Counts in Slovenia
Check daily pollen forecasts, the pollen map, seasonal trends, and all the cities we cover in Slovenia. Forecasts update every day, so check back regularly during pollen season.
Updated: 6 Oct 2026.
Slovenia Pollen Map
- Alder
- Birch
- Grass
- Mugwort
- Olive
- Ragweed
Slovenia's Pollen Seasons
In Slovenia, alder pollen appears in March and April. Birch pollen also arrives in March and April. Birch is the most common pollen type across the year, and April is the busiest month for pollen.
Grass pollen season runs from May through July, with June in the middle. Olive trees release pollen in May and June. These pollens may affect people with allergies.
Later in summer and early autumn, mugwort and ragweed release pollen in August and September. These weeds extend the pollen season beyond spring. Their pollen can affect people with allergies as the season shifts toward autumn.
Pollen Calendar for Slovenia
Typical pollen calendar for Slovenia, averaged across 19 cities from previous years. Alder peaks in March, Birch peaks in April, Grass peaks in June, Mugwort peaks in August, Olive peaks in May, Ragweed peaks in August. Use it to see which months each pollen type usually rises and falls.
| Alder | Birch | Grass | Mugwort | Olive | Ragweed | |
|---|---|---|---|---|---|---|
| Jan | 19.5 | 0 | 0 | 0 | 0 | 0 |
| Feb | 110.2 | 0 | 0 | 0 | 0 | 0 |
| Mar | 316.9 | 344.6 | 2.8 | 0 | 0 | 0 |
| Apr | 93.5 | 1418.8 | 33.5 | 0 | 57.7 | 0 |
| May | 0.7 | 140.4 | 282.7 | 0 | 278.2 | 0 |
| Jun | 0.2 | 19.6 | 696.6 | 0 | 212 | 0 |
| Jul | 0 | 0.2 | 218.4 | 15.4 | 0.2 | 0.9 |
| Aug | 0 | 0 | 65 | 62 | 0 | 253.4 |
| Sep | 0 | 0 | 8.5 | 23.8 | 0 | 233.8 |
| Oct | 0 | 0 | 1.5 | 2.5 | 0 | 0.2 |
| Nov | 0 | 0 | 0.1 | 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 Slovenia
We publish forecasts for these cities across Slovenia. Check the list to see what is near you, or view them on the Slovenia Pollen Map above.
Bohinj Municipality
Izola
Koper
Mestna Občina Novo mesto
Municipality of Dobrovnik
Municipality of Kranjska Gora
Murska Sobota
Občina Šalovci
Other
Piran
Ptuj
Radovljica
Slovenska Bistrica
Urban Municipality of Celje
Vipava
Pollen information is for education and planning only. This is not medical advice. Consult a qualified healthcare provider about symptoms or treatment.