Pollen Count in Dreux
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Dreux, France has pollen seasons. Trees release pollen in spring. Oak, birch, and chestnut trees make a lot of pollen. This happens from March to May.
Updated: 3/21/2026
Grasses and flowers also make pollen. This pollen is in the air from May to July. People notice more pollen on sunny and windy days.
Weeds and ragweed make pollen too. This usually happens in late summer. August and September are the months with the most weed pollen.
Winter months have little to no pollen. Pollen counts go up and down throughout the year. People track pollen counts to know when to stay inside.
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 Dreux 🌾. 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 | 22.4 | 0 | 0 | 0 | 0 | 0 |
| Mar | 342.2 | 57.7 | 0 | 0 | 0 | 0 |
| Apr | 4.2 | 1643.9 | 33.1 | 0 | 0 | 0 |
| May | 0.7 | 36.7 | 349.3 | 0 | 3.9 | 0 |
| Jun | 0 | 0 | 1428.2 | 3 | 0.8 | 0 |
| Jul | 0 | 0 | 515.9 | 32 | 0 | 0 |
| Aug | 0 | 0 | 110.4 | 13.8 | 0 | 1.1 |
| Sep | 0 | 0 | 8.4 | 8.4 | 0 | 4.1 |
| Oct | 0 | 0 | 0.7 | 1.6 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(35 km)