Ragweed Pollen Count in Fontenay-Trésigny, France — Today
Updated Saturday, November 7, 2026
Pollen by type in Fontenay-Trésigny
What is the ragweed pollen count in Fontenay-Trésigny today?
The Fontenay-Trésigny ragweed pollen index today is 52 (Moderate) on Pollen Atlas’s modelled 0–100 scale. Moderate
Modelled pollen risk index — not a measured count.
Ragweed pollen is the dominant allergen in Fontenay-Trésigny today. See the full Fontenay-Trésigny pollen count for the overall index and every type together.
Fontenay-Trésigny is in Seine-et-Marne, Île-de-France, France. Its population is 5,047 (GeoNames).
Fontenay-Trésigny Ragweed Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Saturday, November 7 | 43 | Moderate |
| Sunday, November 8 | 43 | Moderate |
| Monday, November 9 | 47 | Moderate |
| Tuesday, November 10 | 28 | Low |
| Wednesday, November 11 | 30 | Low |
Pollen Atlas models the daily detail as an overall index: day-by-day splits by individual pollen type are not part of the modelled data, so this table shows Fontenay-Trésigny’s overall trend across the week. Today’s ragweed pollen reading is the headline above.
Species driving Fontenay-Trésigny’s ragweed pollen
Species-level counts are not part of the modelled data Pollen Atlas publishes — the modelled index is reported per pollen type, not per species — so this section gives the type summary: ragweed pollen reads 52 (Moderate) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.
How to read this: the “ragweed” figure on this site is the modelled weed pollen index — the weed group (ragweed + mugwort) — printed under the ragweed name the rankings use.
Plants affecting Fontenay-Trésigny now — ragweed pollen
Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Fontenay-Trésigny. The type summary stands: ragweed pollen reads 52 (Moderate) today.
In the Continental West pattern, the plants that typically shape this city’s year are early hazel and alder, a birch-led spring, late-spring grasses, and late-summer mugwort and ragweed — named here as regional context only, not as today’s readings.
Plant detail returns here automatically on any day the feed includes it.
What this ragweed pollen level means
Moderate risk. If you have allergies, consider meds and limit exposure during peak hours.
Keep windows closed at midday; shower after being outside.
Mugwort and ragweed build from August, peak in September, and are ended by the first hard frost. This month sits outside the usual ragweed pollen window for the Continental West pattern, so today’s ragweed pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. No France allergy season guide is published yet, so the seasonal context here follows the Continental West regional pattern.
Fontenay-Trésigny allergies today
Fontenay-Trésigny allergies today are set by the same reading as the Fontenay-Trésigny pollen count today: the Total Pollen Index is 43 (Moderate), and the ragweed pollen index on this page is 52 (Moderate) of it. When people ask about Fontenay-Trésigny allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Fontenay-Trésigny.
Allergies in Fontenay-Trésigny follow the France calendar set out on the full Fontenay-Trésigny page — the chapters, the plants behind them, and the 5-day forecast show whether today is typical for the season or an exception to it. If you are checking allergies today in Fontenay-Trésigny before heading outdoors, the ragweed pollen split on this page is the part to read: it shows whether this pollen type is doing the work today, not just how high the total sits.
Read the five-day overall trend above as the Fontenay-Trésigny allergy forecast for the ragweed pollen season: it shows whether Fontenay-Trésigny allergies are set to ease or build across the week, day by day — the days to plan outdoor time around are the ones where the overall index steps down, not just today.
Fontenay-Trésigny tree pollen count
Fontenay-Trésigny grass pollen count
See Fontenay-Trésigny on the pollen map
Every pollen type, with photos and seasons: the pollen directory
Pollen indexes: a modelled pollen risk index computed by Pollen Atlas from open weather, vegetation and phenology data, calibrated against CDC/NAB season data. Plant detail: Google Pollen API. Index values are modelled, not measured counts. Sources: CDC/NAB; USA-NPN; GBIF (CC BY); ESA WorldCover (CC BY 4.0).