Grass Pollen Count in Guichen, France

Last updated Friday, November 6, 2026

This page shows the most recent reading available for Guichen — from Friday, November 6, 2026 (1 day ago) — not today's reading.

Pollen by type in Guichen

What is the grass pollen count in Guichen today?

The Guichen grass pollen index today is 0.6 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Guichen’s overall pollen count today is 32 (Low) across all types. See the full Guichen pollen count for the overall index and every type together.

Guichen is in Ille-et-Vilaine, Brittany, France. Its population is 7,142 (GeoNames).

Guichen Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Friday, November 632Low
Saturday, November 732Low
Sunday, November 834Low
Monday, November 924Low
Tuesday, November 1032Low

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 Guichen’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Guichen’s grass pollen

The modelled data reports grass as one combined index — there is no species-by-species split for grass anywhere in the data, so this page does not invent one. Today’s modelled grass index for Guichen is 0.6 (Low), and the 5-day overall trend above shows the shape of the week.

As regional context only — not as today’s readings — 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.

Plants affecting Guichen now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Guichen. The type summary stands: grass pollen reads 0.6 (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 grass pollen level means

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

Enjoy outdoor activities.

Grasses hold from May through July, cresting in late May and June. This month sits outside the usual grass pollen window for the Continental West pattern, so today’s grass 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.

Guichen allergies today

Guichen allergies today are set by the same reading as the Guichen pollen count today: the Total Pollen Index is 32 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Guichen allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Guichen.

Allergies in Guichen follow the France calendar set out on the full Guichen 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 Guichen before heading outdoors, the grass 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 Guichen allergy forecast for the grass pollen season: it shows whether Guichen 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 Guichen pollen count — all types, the overall index and today’s ranking context

Guichen tree pollen count

Guichen ragweed pollen count

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

See Guichen on the pollen map

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

Worst cities for allergies

Grass pollen season

Find an allergist in Guichen, 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).