Pollen Count in Vlaardingen
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In Vlaardingen, The Netherlands, there are four pollen seasons. The first season starts in February with alder pollen.
Updated: 3/21/2026
In March, hazel pollen joins the alder pollen in the air. These two types of pollen make the air thick.
In April, birch pollen takes over. This is the worst time for people with pollen allergies. The air is filled with yellow dust.
In June, grass pollen arrives. This is the last pollen season of the year. After this, the air is cleaner again.
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 Vlaardingen 🌾. 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 | 2.4 | 0 | 0 | 0 | 0 | 0 |
| Feb | 19.8 | 0 | 0 | 0 | 0 | 0 |
| Mar | 2.7 | 274.7 | 0.1 | 0 | 0 | 0 |
| Apr | 0.4 | 200.4 | 10.6 | 0 | 0.8 | 0 |
| May | 0 | 12.7 | 68.2 | 0 | 1.9 | 0 |
| Jun | 0 | 0.2 | 507.6 | 55 | 0 | 0 |
| Jul | 0 | 0 | 234.3 | 227.7 | 0 | 0 |
| Aug | 0 | 0 | 82.8 | 60.3 | 0 | 0.5 |
| Sep | 0 | 0 | 13.4 | 1.6 | 0 | 12.7 |
| Oct | 0 | 0 | 1.1 | 0 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(9 km)