Pollen Count in Nidau
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Nidau, Switzerland has different pollen seasons. Tree pollen starts in March. It's a big problem for people. Trees like oak, beech, and birch make a lot of pollen.
Updated: 6/15/2026
Grass pollen season starts in May. It's usually the worst month. Grasses make a lot of pollen. People try to stay inside when it's bad.
Weed pollen season starts in August. It's not as bad as tree or grass pollen. Weeds like ragweed make some pollen. It still causes problems.
Pollen seasons end in October. The air gets cleaner. People can go outside again. Winter comes and pollen problems go away until next spring.
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 Nidau 🌾. 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 |
(1 km)