Grass Pollen Count in Seillonnaz, France

Last updated Sunday, November 8, 2026

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

This reading is the forecast point shared with Montagnieu, France — 6 nearby places use the same point; Seillonnaz is 3.4 km from it.

Pollen by type in Seillonnaz

What is the grass pollen count in Seillonnaz today?

The Seillonnaz 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.

Seillonnaz’s overall pollen count today is 9 (Low) across all types. See the full Seillonnaz pollen count for the overall index and every type together.

Seillonnaz is in Ain, Auvergne-Rhône-Alpes, France. Its population is 136 (GeoNames).

Seillonnaz Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Sunday, November 89Low
Monday, November 95Low
Tuesday, November 105Low
Wednesday, November 117Low
Thursday, November 125Low

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

Species driving Seillonnaz’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 Seillonnaz 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 Seillonnaz now — grass pollen

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

Seillonnaz allergies today

Seillonnaz allergies today are set by the same reading as the Seillonnaz pollen count today: the Total Pollen Index is 9 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Seillonnaz allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Seillonnaz.

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

Seillonnaz tree pollen count

Seillonnaz ragweed pollen count

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

See Seillonnaz 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 Seillonnaz, 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).