Pollen Count in Biel/Bienne
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Biel/Bienne has four main pollen seasons. Tree pollen starts in March. Many trees release pollen at this time. It's one of the longest pollen seasons.
Updated: 4/15/2026
Grass pollen starts in May. It peaks in June. Many people notice more pollen during this time. Grass pollen season usually ends in July.
Weed pollen starts in August. It continues until October. Some weeds release a lot of pollen. This season can be bad for some people.
Ragweed pollen is a problem here. It grows in disturbed soil. Ragweed pollen season is usually short. It happens in late summer.
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 Biel/Bienne 🌾. 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 | 8.2 | 0 | 0 | 0 | 0 | 0 |
| Mar | 29.2 | 82.9 | 0.1 | 0 | 0 | 0 |
| Apr | 4.8 | 2687.1 | 25.6 | 0 | 0.1 | 0 |
| May | 0.7 | 257.9 | 307.6 | 0 | 2.1 | 0 |
| Jun | 0 | 6.2 | 1302 | 0.2 | 3.9 | 0 |
| Jul | 0 | 0 | 400.8 | 11.4 | 0 | 0 |
| Aug | 0 | 0 | 85.3 | 25.5 | 0 | 10.6 |
| Sep | 0 | 0 | 6.8 | 15.5 | 0 | 8.6 |
| Oct | 0 | 0 | 0.4 | 1.9 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(25 km)
(54 km)