Le Mesnil-le-Roi, France Pollen Count Today
Le Mesnil-le-Roi, 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).
Le Mesnil-le-Roi, France
Weeds Index
How active weeds pollen is today (0–100).
Le Mesnil-le-Roi, France
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Le Mesnil-le-Roi Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Le Mesnil-le-Roi residents check each morning
The Le Mesnil-le-Roi pollen count today is 33 (Low). The main driver is Ragweed, with weed pollen at 38 today. Weed pollen leads the split at 38 (Low on its own scale), followed by tree pollen at 36 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 Low band on the Pollen Atlas index means the Total Pollen Index has stayed in the lower part of the 0–100 scale. Readings in this band are built from low individual category values rather than from one large spike, and the category split above matters more than the headline number: a low total can still contain one category, such as weed pollen or mold, reading noticeably higher than the rest, which is why the split is printed on every Le Mesnil-le-Roi page.
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 Le Mesnil-le-Roi pollen forecast below — it is currently mixed, with Monday the highest day in the window.
This is the pollen count Le Mesnil-le-Roi residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Le Mesnil-le-Roi pollen count today?
The Le Mesnil-le-Roi pollen count today is 33 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Le Mesnil-le-Roi: this page is updated every morning with the day’s modelled reading.
Le Mesnil-le-Roi allergies today
Le Mesnil-le-Roi allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 33 (Low), driven mainly by Ragweed. When people ask about Le Mesnil-le-Roi allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Le Mesnil-le-Roi.
Allergies in Le Mesnil-le-Roi 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 Le Mesnil-le-Roi 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 Le Mesnil-le-Roi allergy forecast: today reads 33 (Low), and the day-by-day outlook shows whether Le Mesnil-le-Roi 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 Le Mesnil-le-Roi today records is this same combined reading — tree, grass, weed and mold in one index.
The Le Mesnil-le-Roi allergy count today is 33 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Le Mesnil-le-Roi: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 33 | Low |
| Sunday, November 8 | 33 | Low |
| Monday, November 9 | 36 | Moderate |
| Tuesday, November 10 | 21 | Low |
| Wednesday, November 11 | 22 | Low |
Pollen Atlas forecasts Le Mesnil-le-Roi’s pollen count to peak on Monday at 36 (Moderate) over the next 5 days.
Pollen by type in Le Mesnil-le-Roi
What is driving Le Mesnil-le-Roi’s pollen today
The shape of today’s 33 (Low) is set by weed pollen at 38 (Low on its own scale) — about 51% of the four category readings added together, 2 points clear of the next category, tree pollen at 36. 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 Le Mesnil-le-Roi, 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 21 to 36, changing band 2 times. Today’s 33 sits 4 points above the window’s average of 29 — a moving window, worth reading day by day rather than from the average.
Plants affecting Le Mesnil-le-Roi now
Detailed plant-by-plant readings for Le Mesnil-le-Roi 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 36 (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 38 (Low).
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.
Le Mesnil-le-Roi pollen through the year
Three chapters make the France pollen year, and Le Mesnil-le-Roi 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 Le Mesnil-le-Roi — 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 Le Mesnil-le-Roi pollen count rankings and Le Mesnil-le-Roi on the pollen heatmap.
How to read this index
Pollen Atlas reports the Le Mesnil-le-Roi 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 Le Mesnil-le-Roi, 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.
Le Mesnil-le-Roi in today’s national picture
At 33 (Low), Le Mesnil-le-Roi ranks joint 9423rd 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 Le Mesnil-le-Roi: Maisons-Laffitte, France (2 km away) reads 36 (Low); Montesson, France (3 km away) reads 33 (Low); Achères, France (5 km away) reads 36 (Low). Le Mesnil-le-Roi reads 3 points lower than 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 Le Mesnil-le-Roi resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Le Mesnil-le-Roi, 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.
Le Mesnil-le-Roi in its local area
Le Mesnil-le-Roi is in Yvelines, Île-de-France, France. Its population is 6,515 (GeoNames).
Across France’s 8633 tracked cities, Le Mesnil-le-Roi ranks joint 3995th today.
Like every Pollen Atlas city page, the Le Mesnil-le-Roi, France pollen count is refreshed each morning.
Nearby cities
- Maisons-Laffitte pollen count (2 km away)
- Montesson pollen count (3 km away)
- Achères pollen count (5 km away)
- Sartrouville pollen count (5 km away)
- Le Vésinet pollen count (5 km away)
- Houilles pollen count (5 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).