Braine-l'Alleud, Belgium Pollen Count Today
Braine-l'Alleud, Belgium · Updated Monday, November 9, 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).
Braine-l'Alleud, Belgium
Weeds Index
How active weeds pollen is today (0–100).
Braine-l'Alleud, Belgium
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Braine-l'Alleud Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Braine-l'Alleud residents check each morning
The Braine-l'Alleud pollen count today is 15 (Low). The main driver is Ragweed, with weed pollen at 11 today. Tree pollen is the highest single category in the split at 15 (Low), ahead of weed pollen at 11 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 Monday, November 9, 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 tree pollen, reading noticeably higher than the rest, which is why the split is printed on every Braine-l'Alleud 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 Braine-l'Alleud pollen forecast below — it is currently mixed, with Monday the highest day in the window.
This is the pollen count Braine-l'Alleud residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Braine-l'Alleud pollen count today?
The Braine-l'Alleud pollen count today is 15 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Braine-l'Alleud: this page is updated every morning with the day’s modelled reading.
Braine-l'Alleud allergies today
Braine-l'Alleud allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 15 (Low), driven mainly by Ragweed. When people ask about Braine-l'Alleud allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Braine-l'Alleud.
Allergies in Braine-l'Alleud follow the Belgium 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 Braine-l'Alleud 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 Braine-l'Alleud allergy forecast: today reads 15 (Low), and the day-by-day outlook shows whether Braine-l'Alleud 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 Braine-l'Alleud today records is this same combined reading — tree, grass, weed and mold in one index.
The Braine-l'Alleud allergy count today is 15 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Braine-l'Alleud: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Monday, November 9 | 15 | Low |
| Tuesday, November 10 | 7 | Low |
| Wednesday, November 11 | 6 | Low |
| Thursday, November 12 | 15 | Low |
| Friday, November 13 | 14 | Low |
Pollen Atlas forecasts Braine-l'Alleud’s pollen count to peak on Monday at 15 (Low) over the next 5 days.
Pollen by type in Braine-l'Alleud
What is driving Braine-l'Alleud’s pollen today
The shape of today’s 15 (Low) is set by tree pollen at 15 (Low on its own scale) — about 56% of the four category readings added together, 4 points clear of the next category, weed pollen at 11. Tree readings are the fastest-moving of the four in their season, because species pollinate in sequence — a tree-led total can change character within a week. Tree pollen leading in November runs against the usual calendar — the Belgium tree chapter runs February to May — 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 Braine-l'Alleud, 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 6 to 15, never changing band. Today’s 15 sits 4 points above the window’s average of 11.4 — a moving window, worth reading day by day rather than from the average.
Plants affecting Braine-l'Alleud now
Detailed plant-by-plant readings for Braine-l'Alleud 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 15 (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 11 (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.
Braine-l'Alleud pollen through the year
Three chapters make the Belgium pollen year, and Braine-l'Alleud 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 Belgium allergy season guide is published yet, so this page does not single out signature pollens for Braine-l'Alleud — 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 Belgium 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 Belgium year, February to October — leaving a quiet gap of roughly 3 months in the depth of the off-season. No Belgium allergy season guide is published yet — this calendar follows the Continental West regional pattern. See Braine-l'Alleud pollen count rankings and Braine-l'Alleud on the pollen heatmap.
How to read this index
Pollen Atlas reports the Braine-l'Alleud 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 Braine-l'Alleud, Belgium 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.
Braine-l'Alleud in today’s national picture
At 15 (Low), Braine-l'Alleud ranks joint 44135th of the 217874 cities Pollen Atlas tracks today — in the middle of the national table. The highest reading in the country today is Zuoz, Switzerland at 66, and the lowest is Извор, North Macedonia at 5. The whole table spans 61 points today — a wide-open day, when the top and bottom of the table are effectively in different seasons.
Around Braine-l'Alleud: Ophain-Bois-Seigneur-Isaac, Belgium (2 km away) reads 18 (Low); Waterloo, Belgium (4 km away) reads 15 (Low); Lillois-Witterzée, Belgium (4 km away) reads 18 (Low). Braine-l'Alleud reads 3 points lower than its nearest tracked neighbour today. Across Belgium’s 2631 tracked cities, today runs from 5 in Herbeumont to 32 in Watou.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Braine-l'Alleud resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Braine-l'Alleud, Belgium 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.
Braine-l'Alleud in its local area
Across Belgium’s 2631 tracked cities, Braine-l'Alleud ranks joint 1034th today.
Like every Pollen Atlas city page, the Braine-l'Alleud, Belgium pollen count is refreshed each morning.
Nearby cities
- Ophain-Bois-Seigneur-Isaac pollen count (2 km away)
- Waterloo pollen count (4 km away)
- Lillois-Witterzée pollen count (4 km away)
- Plancenoit pollen count (5 km away)
- Wauthier-Braine pollen count (5 km away)
- Haut-Ittre 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).