Ragweed Pollen Count in Les Alluets-le-Roi, France — Today

Updated Saturday, November 7, 2026

Pollen by type in Les Alluets-le-Roi

What is the ragweed pollen count in Les Alluets-le-Roi today?

The Les Alluets-le-Roi ragweed pollen index today is 52 (Moderate) on Pollen Atlas’s modelled 0–100 scale. Moderate

Modelled pollen risk index — not a measured count.

Ragweed pollen is the dominant allergen in Les Alluets-le-Roi today. See the full Les Alluets-le-Roi pollen count for the overall index and every type together.

Les Alluets-le-Roi is in Yvelines, Île-de-France, France. Its population is 1,344 (GeoNames).

Les Alluets-le-Roi Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 744Moderate
Sunday, November 843Moderate
Monday, November 948Moderate
Tuesday, November 1018Low
Wednesday, November 1131Low

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 Les Alluets-le-Roi’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Les Alluets-le-Roi’s ragweed 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: ragweed pollen reads 52 (Moderate) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

How to read this: the “ragweed” figure on this site is the modelled weed pollen index — the weed group (ragweed + mugwort) — printed under the ragweed name the rankings use.

Plants affecting Les Alluets-le-Roi now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Les Alluets-le-Roi. The type summary stands: ragweed pollen reads 52 (Moderate) 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 ragweed pollen level means

Moderate risk. If you have allergies, consider meds and limit exposure during peak hours.

Keep windows closed at midday; shower after being outside.

Mugwort and ragweed build from August, peak in September, and are ended by the first hard frost. This month sits outside the usual ragweed pollen window for the Continental West pattern, so today’s ragweed 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.

Les Alluets-le-Roi allergies today

Les Alluets-le-Roi allergies today are set by the same reading as the Les Alluets-le-Roi pollen count today: the Total Pollen Index is 44 (Moderate), and the ragweed pollen index on this page is 52 (Moderate) of it. When people ask about Les Alluets-le-Roi allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Les Alluets-le-Roi.

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

Les Alluets-le-Roi tree pollen count

Les Alluets-le-Roi grass pollen count

See how Les Alluets-le-Roi ranks in today's pollen count rankings — the worst cities for allergies today

See Les Alluets-le-Roi on the pollen map

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

Worst cities for allergies

Ragweed season

Find an allergist in Les Alluets-le-Roi, 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).