Pollen Count in Aarhus
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In Aarhus, Denmark, pollen seasons happen every year. They start in late March and last until September. Trees, grass, and weeds release tiny pollen grains into the air.
Updated: 3/16/2026
In spring, trees like birch and oak release pollen. This is usually from late March to early May. The air is filled with yellow dust from these trees.
In summer, grass and weeds release pollen. This happens from late May to early August. The pollen count is highest during this time.
In autumn, weeds like nettle and sorrel release pollen. This is usually from late August to early September. The pollen count starts to decrease then.
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 Aarhus 🌾. 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 | 0 | 0 | 0 | 0 | 0 |
| Feb | 3.8 | 0 | 0 | 0 | 0 | 0 |
| Mar | 139.9 | 18 | 0 | 0 | 0 | 0 |
| Apr | 8.1 | 1035.4 | 2.2 | 0 | 0 | 0 |
| May | 1.6 | 400 | 34.3 | 0 | 0 | 0 |
| Jun | 0 | 3.5 | 343.1 | 10.7 | 0.1 | 0 |
| Jul | 0 | 0.4 | 236.5 | 189 | 0 | 0 |
| Aug | 0 | 0 | 68.3 | 92.7 | 0 | 1 |
| Sep | 0 | 0 | 8 | 0.5 | 0 | 5.6 |
| Oct | 0 | 0 | 0.7 | 0 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(39 km)