Ragweed Pollen Count in Trelly, France

Last updated Sunday, November 8, 2026

This page shows the most recent reading available for Trelly — from Sunday, November 8, 2026 (1 day ago) — not today's reading.

This reading is the forecast point shared with Saint-Denis-le-Vêtu, France — 8 nearby places use the same point; Trelly is 9.5 km from it.

Pollen by type in Trelly

What is the ragweed pollen count in Trelly today?

The Trelly ragweed pollen index today is 7 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Trelly’s overall pollen count today is 18 (Low) across all types. See the full Trelly pollen count for the overall index and every type together.

Trelly is in Manche, Normandy, France. Its population is 562 (GeoNames).

Trelly Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Sunday, November 818Low
Monday, November 912Low
Tuesday, November 106Low
Wednesday, November 1111Low
Thursday, November 1216Low

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 Trelly’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Trelly’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 7 (Low) 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 Trelly now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Trelly. The type summary stands: ragweed pollen reads 7 (Low) 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

Low risk. Keep windows open; consider allergy meds only if sensitive.

Enjoy outdoor activities.

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.

Trelly allergies today

Trelly allergies today are set by the same reading as the Trelly pollen count today: the Total Pollen Index is 18 (Low), and the ragweed pollen index on this page is 7 (Low) of it. When people ask about Trelly allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Trelly.

Allergies in Trelly follow the France calendar set out on the full Trelly 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 Trelly 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 Trelly allergy forecast for the ragweed pollen season: it shows whether Trelly 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.

See the full Trelly pollen count — all types, the overall index and today’s ranking context

Trelly tree pollen count

Trelly grass pollen count

See how Trelly ranks in today's pollen count rankings — the worst cities for allergies today

See Trelly on the pollen map

Every pollen type, with photos and seasons: the pollen directory

Worst cities for allergies

Ragweed season

Find an allergist in Trelly, France

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).