Pollen Count in Bazel
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Bazel, Belgium has different pollen seasons. Tree pollen starts in March. It's a big problem for people. Trees like oak, birch, and alder make a lot of pollen.
Updated: 6/1/2026
Grass pollen season starts in May. It's the worst month for pollen. Grasses make a lot of yellow pollen that floats in the air.
Weed pollen season starts in July. It's not as bad as tree or grass pollen. Weeds like ragweed and nettle make some pollen.
Pollen seasons end in September. The air gets cleaner. People can breathe easier. Winter comes and pollen disappears.
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 Bazel 🌾. 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 | 48.6 | 0 | 0 | 0 | 0 | 0 |
| Mar | 583.7 | 232.5 | 0 | 0 | 0 | 0 |
| Apr | 4.5 | 2159.7 | 14 | 0 | 0 | 0 |
| May | 0.7 | 105.6 | 121.7 | 0 | 1.1 | 0 |
| Jun | 0 | 0.1 | 885.8 | 43.5 | 0.4 | 0 |
| Jul | 0 | 0.3 | 307.2 | 258.4 | 0 | 0 |
| Aug | 0 | 0 | 76.4 | 64.5 | 0 | 0.9 |
| Sep | 0 | 0 | 6.6 | 2.6 | 0 | 1.9 |
| Oct | 0 | 0 | 0.5 | 0.2 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(7 km)