Pollen Count in Les Rousses
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Les Rousses is a town in France. It has four main pollen seasons. Tree pollen starts in March. Many trees release pollen at this time.
Updated: 6/3/2026
Grass pollen season starts in May. This season can last until July. Grasses release a lot of pollen. It can be very uncomfortable.
Ragweed pollen season is in August and September. Ragweed plants grow in fields and along roads. They release a lot of pollen into the air.
Weed pollen season is from October to November. Some weeds still release pollen. The amount of pollen decreases as winter approaches. Les Rousses gets colder then.
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 Les Rousses 🌾. 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 | 37.9 | 0 | 0 | 0 | 0 | 0 |
| Mar | 148.6 | 60.5 | 0.2 | 0 | 0 | 0 |
| Apr | 7.9 | 2028.1 | 23.2 | 0 | 0.3 | 0 |
| May | 1.5 | 914.2 | 316.5 | 0 | 5.5 | 0 |
| Jun | 0 | 3.6 | 819.9 | 0 | 7.2 | 0 |
| Jul | 0 | 0 | 252.9 | 6.5 | 0 | 0 |
| Aug | 0 | 0 | 55.2 | 12.5 | 0 | 17.9 |
| Sep | 0 | 0 | 4 | 7.9 | 0 | 17.5 |
| Oct | 0 | 0 | 0.4 | 0.8 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(17 km)
(34 km)