Pollen Count in Bohus
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Bohus, Sweden has several types of pollen. Trees, grasses, and weeds produce pollen. Pollen is in the air during spring, summer, and fall.
Updated: 4/29/2026
Tree pollen starts in March. It's worst in April and May. Many trees produce pollen, like oak, birch, and alder. The pollen count is usually highest in the morning.
Grass pollen starts in May. It's worst in June and July. Grasses produce a lot of pollen, making it hard for people outside. Weeds produce pollen in late summer.
The pollen season ends in September. Some plants produce pollen all year. The amount of pollen varies each year, depending on the weather.
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 Bohus 🌾. 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 | 1.1 | 0 | 0 | 0 | 0 | 0 |
| Mar | 160.5 | 85.1 | 0 | 0 | 0 | 0 |
| Apr | 4.8 | 7414.1 | 0.3 | 0 | 0 | 0 |
| May | 2.3 | 587.1 | 21.5 | 0 | 0 | 0 |
| Jun | 0 | 14.2 | 306.2 | 0.1 | 0 | 0 |
| Jul | 0 | 0.8 | 308.3 | 52 | 0 | 0 |
| Aug | 0 | 0 | 44 | 22.4 | 0 | 1.7 |
| Sep | 0 | 0 | 4.1 | 0.4 | 0 | 12.6 |
| Oct | 0 | 0 | 0.1 | 0 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(16 km)