Grass Pollen Count in La Chapelle-en-Vexin, France — Today
Updated Monday, November 9, 2026
This reading is the forecast point shared with Saint-Clair-sur-Epte, France — 10 nearby places use the same point; La Chapelle-en-Vexin is 6 km from it.
Pollen by type in La Chapelle-en-Vexin
What is the grass pollen count in La Chapelle-en-Vexin today?
The La Chapelle-en-Vexin 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.
La Chapelle-en-Vexin’s overall pollen count today is 27 (Low) across all types. See the full La Chapelle-en-Vexin pollen count for the overall index and every type together.
La Chapelle-en-Vexin is in Val d'Oise, Île-de-France, France. Its population is 331 (GeoNames).
La Chapelle-en-Vexin Grass Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Monday, November 9 | 27 | Low |
| Tuesday, November 10 | 11 | Low |
| Wednesday, November 11 | 23 | Low |
| Thursday, November 12 | 24 | Low |
| Friday, November 13 | 23 | Low |
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 La Chapelle-en-Vexin’s overall trend across the week. Today’s grass pollen reading is the headline above.
Species driving La Chapelle-en-Vexin’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 La Chapelle-en-Vexin 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 La Chapelle-en-Vexin now — grass pollen
Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for La Chapelle-en-Vexin. 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.
La Chapelle-en-Vexin allergies today
La Chapelle-en-Vexin allergies today are set by the same reading as the La Chapelle-en-Vexin pollen count today: the Total Pollen Index is 27 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about La Chapelle-en-Vexin allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for La Chapelle-en-Vexin.
Allergies in La Chapelle-en-Vexin follow the France calendar set out on the full La Chapelle-en-Vexin 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 La Chapelle-en-Vexin 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 La Chapelle-en-Vexin allergy forecast for the grass pollen season: it shows whether La Chapelle-en-Vexin 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.
La Chapelle-en-Vexin tree pollen count
La Chapelle-en-Vexin ragweed pollen count
See La Chapelle-en-Vexin on the pollen map
Every pollen type, with photos and seasons: the pollen directory
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).