Grass Pollen Count in Saint-Jean-du-Castillonnais, France — Today

Updated Monday, November 9, 2026

This reading is the forecast point shared with Augirein, France — 3 nearby places use the same point; Saint-Jean-du-Castillonnais is 0.4 km from it.

Pollen by type in Saint-Jean-du-Castillonnais

What is the grass pollen count in Saint-Jean-du-Castillonnais today?

The Saint-Jean-du-Castillonnais 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.

Saint-Jean-du-Castillonnais’s overall pollen count today is 12 (Low) across all types. See the full Saint-Jean-du-Castillonnais pollen count for the overall index and every type together.

Saint-Jean-du-Castillonnais is in Ariège, Occitanie, France. Its population is 23 (GeoNames).

Saint-Jean-du-Castillonnais Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Monday, November 912Low
Tuesday, November 1012Low
Wednesday, November 1110Low
Thursday, November 125Low
Friday, November 137Low

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 Saint-Jean-du-Castillonnais’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Saint-Jean-du-Castillonnais’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 Saint-Jean-du-Castillonnais 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 Saint-Jean-du-Castillonnais now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Saint-Jean-du-Castillonnais. 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.

Saint-Jean-du-Castillonnais allergies today

Saint-Jean-du-Castillonnais allergies today are set by the same reading as the Saint-Jean-du-Castillonnais pollen count today: the Total Pollen Index is 12 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Saint-Jean-du-Castillonnais allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Saint-Jean-du-Castillonnais.

Allergies in Saint-Jean-du-Castillonnais follow the France calendar set out on the full Saint-Jean-du-Castillonnais 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 Saint-Jean-du-Castillonnais 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 Saint-Jean-du-Castillonnais allergy forecast for the grass pollen season: it shows whether Saint-Jean-du-Castillonnais 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 Saint-Jean-du-Castillonnais pollen count — all types, the overall index and today’s ranking context

Saint-Jean-du-Castillonnais tree pollen count

Saint-Jean-du-Castillonnais ragweed pollen count

See how Saint-Jean-du-Castillonnais ranks in today's pollen count rankings — the worst cities for allergies today

See Saint-Jean-du-Castillonnais 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 Saint-Jean-du-Castillonnais, 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).