Roissy-en-France, France Pollen Count Today
Roissy-en-France, France · Updated Saturday, November 7, 2026
Pollen Overview
Today's overall pollen level and the dominant type (trees, weeds, grass, or mold).
Total Pollen Index
The combined pollen level across all types (0–100).
Roissy-en-France, France
Weeds Index
How active weeds pollen is today (0–100).
Roissy-en-France, France
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Roissy-en-France Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Roissy-en-France residents check each morning
The Roissy-en-France pollen count today is 42 (Moderate). The main driver is Ragweed, with weed pollen at 50 today. Weed pollen leads the split at 50 (Moderate on its own scale), followed by tree pollen at 34 and grass pollen at 0.6. Below, the plant detail and the multi-day outlook show whether today is the pattern or the exception. Pollen Atlas updated this count on Saturday, November 7, 2026.
A Moderate band means the Total Pollen Index sits in the middle of the 0–100 scale — neither a quiet day nor a peak day. On moderate days the split usually explains the total: one or two categories do most of the work while the others stay low. The Roissy-en-France split above shows exactly which categories those are today, and the forecast below shows whether the moderate reading is a plateau or a step toward a higher band.
Fall is ragweed season across most of the United States: ragweed plants release pollen from late summer into autumn, and weed pollen is typically the last major outdoor pollen category to fade as the weather cools. That pattern is why an autumn total is so often weed-led even when the headline number is low — tree and grass pollen have usually receded by then, leaving weed pollen, and on damp days mold, to make up most of what the index records.
To see whether today’s pollen level holds, check the 5-day Roissy-en-France pollen forecast below — it is currently mixed, with Monday the highest day in the window.
This is the pollen count Roissy-en-France residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Roissy-en-France pollen count today?
The Roissy-en-France pollen count today is 42 out of 100 (Moderate) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Roissy-en-France: this page is updated every morning with the day’s modelled reading.
Roissy-en-France allergies today
Roissy-en-France allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 42 (Moderate), driven mainly by Ragweed. When people ask about Roissy-en-France allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Roissy-en-France.
Allergies in Roissy-en-France follow the France calendar set out below — the chapters, the plants behind them, and the 5-day forecast on this page show whether today is typical for the season or an exception to it. If you are checking allergies today in Roissy-en-France before heading outdoors, the split at the top of this page is the part to read: it shows which pollen is doing the work today, not just how high the total sits.
Read the five-day table on this page as the Roissy-en-France allergy forecast: today reads 42 (Moderate), and the day-by-day outlook shows whether Roissy-en-France allergies are set to ease or build across the week — the days to plan outdoor time around are the ones where the index steps down, not just today.
In practice, the allergy count Roissy-en-France today records is this same combined reading — tree, grass, weed and mold in one index.
The Roissy-en-France allergy count today is 42 (Moderate) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Roissy-en-France: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 42 | Moderate |
| Sunday, November 8 | 41 | Moderate |
| Monday, November 9 | 45 | Moderate |
| Tuesday, November 10 | 27 | Low |
| Wednesday, November 11 | 18 | Low |
Pollen Atlas forecasts Roissy-en-France’s pollen count to peak on Monday at 45 (Moderate) over the next 5 days.
Pollen by type in Roissy-en-France
What is driving Roissy-en-France’s pollen today
The shape of today’s 42 (Moderate) is set by weed pollen at 50 (Moderate on its own scale) — about 59% of the four category readings added together, 16 points clear of the next category, tree pollen at 34. A weed-led total is the classic late-year shape: tree and grass pollen have usually receded, leaving weed pollen — and on damp days mold — to make up most of what the index records. Weed pollen leading in November runs against the usual calendar — the France weed chapter runs August to October — so today’s lead is the model outranking the pattern, and this page reports the modelled reading first.
Plant-level detail is not in today’s feed for Roissy-en-France, so the drivers have to be read from the category split above — it shows how much of today’s total each category is actually carrying, and plant detail returns here automatically on any day the feed includes it.
Across the five-day window the Total Pollen Index runs from 18 to 45, changing band 1 time. Today’s 42 sits 7 points above the window’s average of 34.6 — a wide-open window, in which the day matters more than the average.
Plants affecting Roissy-en-France now
Detailed plant-by-plant readings for Roissy-en-France were not returned in today\u2019s source data, so this section summarises the pollen types the index above is built from instead of listing individual plants.
Tree pollen is one of the categories with a non-zero reading today, at 34 (Low).
Grass pollen is one of the categories with a non-zero reading today, at 0.6 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 50 (Moderate).
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\u2019s measurements.
Plant detail returns here automatically on any day the source data includes it.
Every pollen type, with photos and seasons: the pollen directory.
Roissy-en-France pollen through the year
Three chapters make the France pollen year, and Roissy-en-France follows them in the Continental West order. The tree chapter: hazel and alder open from February, and birch leads the spring peak through April and into May. The grass chapter: grasses hold from May through July, cresting in late May and June. The weed chapter: mugwort and ragweed build from August, peak in September, and are ended by the first hard frost. Mold builds through the humid summer and fills the gaps between chapters.
No France allergy season guide is published yet, so this page does not single out signature pollens for Roissy-en-France — the calendar above is the Continental West regional pattern, and the plant detail on this page names what today’s feed actually records.
November falls between the main chapters of the France pollen year — the tail of one and the approach of the next — so the calendar alone explains little today, and the modelled split above carries the story. Between them, the three chapters cover 9 months of the France year, February to October — leaving a quiet gap of roughly 3 months in the depth of the off-season. No France allergy season guide is published yet — this calendar follows the Continental West regional pattern. See Roissy-en-France pollen count rankings and Roissy-en-France on the pollen heatmap.
How to read this index
Pollen Atlas reports the Roissy-en-France pollen count on a Total Pollen Index from 0 to 100, built from separate tree, grass and weed readings. The total is a summary, not an average of the three: a single strong category can lift it, and three quiet categories can hold it down even in a month when Roissy-en-France, France pollen is usually more active. Index values are a modelled pollen risk index computed by Pollen Atlas from open weather, vegetation and phenology data, calibrated against CDC/NAB season data, with plant detail by the Google Pollen API. The index is a modelled 0–100 scale, not a measured count, and figures update through the day, so a morning and an evening visit to this page can legitimately show different numbers.
Roissy-en-France in today’s national picture
At 42 (Moderate), Roissy-en-France ranks joint 1002nd of the 90896 cities Pollen Atlas tracks today — in the middle of the national table. The highest reading in the country today is Beja, Portugal at 52, and the lowest is Los Ángeles de San Rafael, Spain at 5. The whole table spans 47 points today — a wide-open day, when the top and bottom of the table are effectively in different seasons.
Around Roissy-en-France: Le Thillay, France (3 km away) reads 42 (Moderate); Goussainville, France (4 km away) reads 42 (Moderate); Louvres, France (5 km away) reads 42 (Moderate). Roissy-en-France reads exactly level with its nearest tracked neighbour today. Across France’s 8633 tracked cities, today runs from 5 in Saint-Étienne to 50 in Toulon.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Roissy-en-France resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Roissy-en-France, France can test whether tree, grass, weed or mold is the category that matters for you — the four readings at the top of this page are the starting point for that conversation.
Roissy-en-France in its local area
Roissy-en-France is in Val d'Oise, Île-de-France, France. Its population is 2,651 (GeoNames).
Across France’s 8633 tracked cities, Roissy-en-France ranks joint 386th today.
Like every Pollen Atlas city page, the Roissy-en-France, France pollen count is refreshed each morning.
Nearby cities
- Le Thillay pollen count (3 km away)
- Goussainville pollen count (4 km away)
- Louvres pollen count (5 km away)
- Villepinte pollen count (5 km away)
- Gonesse pollen count (5 km away)
- Puiseux-en-France pollen count (6 km away)
From Pollen Atlas News
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).