Pollen Count in Dieppe
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In early spring, from February to April, trees start to release pollen in Dieppe. Hazel, alder, birch, and plane trees are common at this time. The air can feel full of tiny grains as buds open and new leaves grow.
Updated: 8/1/2026
In late spring and early summer, from May to June, grasses are the main pollen source. Meadows, parks, and roadsides can all send grass pollen into the air. This season often feels bright and warm, with many plants growing fast.
In summer, from June to August, weeds begin to matter more. Plants like mugwort can release pollen then. Some other wild plants also add to the air. This is a time when many fields and empty lots stay green and busy.
In autumn, from September to October, pollen usually drops a lot. Most trees and grasses have finished releasing it. A few late weeds may still give off small amounts. By late fall, the air is cooler, and the pollen season is mostly over.
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 Dieppe 🌾. 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 | 5.8 | 0 | 0 | 0 | 0 | 0 |
| Mar | 204.2 | 27.6 | 0 | 0 | 0 | 0 |
| Apr | 3.5 | 1294.2 | 12.9 | 0 | 0 | 0 |
| May | 0.5 | 62.9 | 65.1 | 0 | 1.9 | 0 |
| Jun | 0 | 0 | 377.1 | 4.2 | 0.2 | 0 |
| Jul | 0 | 0.1 | 139.9 | 33.9 | 0 | 0 |
| Aug | 0 | 0 | 33.5 | 11.3 | 0 | 0.6 |
| Sep | 0 | 0 | 3.1 | 4.9 | 0 | 1.3 |
| Oct | 0 | 0 | 0.1 | 0.6 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0.1 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(53 km)