Pollen Count in Paris
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Paris, France has a temperate oceanic climate with mild, wet winters and warm, humid summers. Spring and fall are transition seasons with variable weather.
Updated: 3/18/2026
Pollen season in Paris typically starts in late February with tree pollen, followed by grass pollen in May and weed pollen in August. Ragweed pollen can be particularly problematic.
Paris's location in the Paris Basin and proximity to the sea can affect pollen count, with occasional spikes during dry, windy weather. However, overall pollen levels are relatively low compared to other European cities.
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 Paris 🌾. 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 | 60.9 | 0 | 0 | 0 | 0 | 0 |
| Mar | 392.7 | 162 | 0 | 0 | 0 | 0 |
| Apr | 3.5 | 1055.2 | 18.4 | 0 | 0 | 0 |
| May | 0.7 | 34 | 189.8 | 0 | 3.5 | 0 |
| Jun | 0 | 0 | 761.3 | 37.5 | 1 | 0 |
| Jul | 0 | 0 | 256.7 | 313.7 | 0 | 0 |
| Aug | 0 | 0 | 63.4 | 120.9 | 0 | 11.6 |
| Sep | 0 | 0 | 5 | 94.5 | 0 | 14 |
| Oct | 0 | 0 | 0.4 | 12.5 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |