Ragweed Pollen Count in Chevry-Cossigny, France — Today

Updated Saturday, November 7, 2026

This reading is the forecast point for Chevry-Cossigny — 2 nearby places use the same point; Chevry-Cossigny is 1 km from it.

Pollen by type in Chevry-Cossigny

What is the ragweed pollen count in Chevry-Cossigny today?

The Chevry-Cossigny ragweed pollen index today is 42 (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 Chevry-Cossigny today. See the full Chevry-Cossigny pollen count for the overall index and every type together.

Chevry-Cossigny is in Seine-et-Marne, Île-de-France, France. Its population is 3,575 (GeoNames).

Chevry-Cossigny Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 736Low
Sunday, November 836Low
Monday, November 939Low
Tuesday, November 1023Low
Wednesday, November 1124Low

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 Chevry-Cossigny’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Chevry-Cossigny’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 42 (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 Chevry-Cossigny now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Chevry-Cossigny. The type summary stands: ragweed pollen reads 42 (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.

Chevry-Cossigny allergies today

Chevry-Cossigny allergies today are set by the same reading as the Chevry-Cossigny pollen count today: the Total Pollen Index is 36 (Low), and the ragweed pollen index on this page is 42 (Moderate) of it. When people ask about Chevry-Cossigny allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Chevry-Cossigny.

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

Chevry-Cossigny tree pollen count

Chevry-Cossigny grass pollen count

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

See Chevry-Cossigny on the pollen map

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

Worst cities for allergies

Ragweed season

Find an allergist in Chevry-Cossigny, 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).