Pollen Count in Koper
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Koper, Slovenia has a Mediterranean climate. Pollen season starts in March. Trees and plants begin to bloom. They release tiny particles called pollen into the air.
Updated: 4/14/2026
In Koper, tree pollen is a problem in March and April. Oak, beech, and pine trees produce a lot of pollen. It blows in the wind.
Grass pollen is a problem in May and June. Grasses and weeds grow everywhere. They produce yellow flowers that make a lot of pollen.
In summer, some plants like ragweed make pollen. It usually ends in September. People often stay indoors when pollen counts are high.
Pollen Forecast Chart
Recommendations
When pollen concentrations reach a peak, we suggest these simple steps to help with hay fever. These tips are extra important on windy days when plants are in peak anthesis (the time when they release the most pollen).
- Wear masks if necessary
- Shower after going out
- Wear sunglasses if windy
- Close windows and doors
- Use an indoor air purifier
- Avoid wearing woolen clothes outside
- Limit outdoor activities
Annual Pollen Overview
Check out this month-by-month overview of the daily average pollen count in Koper 🌾. This data is based on previous years and serves as a guideline to help you understand when different pollen seasons typically occur in your city.
| Alder | Birch | Grass | Mugwort | Olive | Ragweed | |
|---|---|---|---|---|---|---|
| Jan | 0.7 | 0 | 0 | 0 | 0 | 0 |
| Feb | 25 | 0 | 0.1 | 0 | 0 | 0 |
| Mar | 105.3 | 379 | 9 | 0 | 0 | 0 |
| Apr | 29 | 618 | 48.1 | 0 | 469.5 | 0 |
| May | 0.7 | 68 | 314.7 | 0 | 2235.3 | 0 |
| Jun | 0.2 | 23 | 642.1 | 0 | 530.3 | 0 |
| Jul | 0 | 0.1 | 200.7 | 8.1 | 0.9 | 0.6 |
| Aug | 0 | 0 | 75.2 | 49.7 | 0 | 134.7 |
| Sep | 0 | 0 | 14.1 | 13 | 0 | 81.6 |
| Oct | 0 | 0 | 3.9 | 3.9 | 0 | 0.2 |
| Nov | 0 | 0 | 0.4 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
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