Tree 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 tree pollen count in Trelly today?

The Trelly tree pollen index today is 18 (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 39 (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 Tree Pollen Count: 5-Day Forecast

DayOverall indexCategory
Sunday, November 839Low
Monday, November 927Low
Tuesday, November 1015Low
Wednesday, November 1125Low
Thursday, November 1238Low

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 tree pollen reading is the headline above.

Species driving Trelly’s tree 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: tree pollen reads 18 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

Plants affecting Trelly now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Trelly. The type summary stands: tree pollen reads 18 (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 tree pollen level means

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

Enjoy outdoor activities.

Hazel and alder open from February, and birch leads the spring peak through April and into May. This month sits outside the usual tree pollen window for the Continental West pattern, so today’s tree 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 39 (Low), and the tree pollen index on this page is 18 (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 tree 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 tree 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 grass pollen count

Trelly ragweed 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

Tree pollen 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).