Montréal, QC Pollen Count Today
Montréal, QC · 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).
Montréal, QC
Weeds Index
How active weeds pollen is today (0–100).
Montréal, QC
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Montréal Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Montréal residents check each morning
The Montréal pollen count today is 28 (Low). The main driver is Ragweed, with weed pollen at 37 today. The full split is tree pollen 0.6, grass pollen 0.6, weed pollen 37. The sections below break that headline number down by plant, by day and by what the band means in practice. 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 Montréal page.
Fall is ragweed season across most of North America: 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. In the Northeast, autumn weed pollen typically winds down as colder nights arrive, so late-season totals can change quickly from week to week.
To see whether today’s pollen level holds, check the 5-day Montréal pollen forecast below — it is currently mixed, with Tuesday the highest day in the window.
This is the pollen count Montréal residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Montréal pollen count today?
The Montréal pollen count today is 28 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Montréal: this page is updated every morning with the day’s modelled reading.
Montréal allergies today
Montréal allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 28 (Low), driven mainly by Ragweed. When people ask about Montréal allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Montréal.
Allergies in Montréal follow the Quebec 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 Montréal 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 Montréal allergy forecast: today reads 28 (Low), and the day-by-day outlook shows whether Montréal 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 Montréal today records is this same combined reading — tree, grass, weed and mold in one index.
The Montréal allergy count today is 28 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Montréal: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 28 | Low |
| Sunday, November 8 | 18 | Low |
| Monday, November 9 | 28 | Low |
| Tuesday, November 10 | 39 | Moderate |
| Wednesday, November 11 | 39 | Moderate |
Pollen Atlas forecasts Montréal’s pollen count to peak on Tuesday at 39 (Moderate) over the next 5 days.
Pollen by type in Montréal
What is driving Montréal’s pollen today
The shape of today’s 28 (Low) is set by weed pollen at 37 (Low on its own scale) — about 97% of the four category readings added together, 36.4 points clear of the next category, tree pollen at 0.6. 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 Quebec 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 Montréal, 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 39, changing band 1 time. Today’s 28 sits 2 points below the window’s average of 30.4 — a moving window, worth reading day by day rather than from the average.
Plants affecting Montréal now
Detailed plant-by-plant readings for Montréal 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 0.6 (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 37 (Low).
In the Northeast pattern, the plants that typically shape this city’s year are spring trees, late-spring grasses and late-summer 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.
Montréal pollen through the year
The Montréal pollen year runs in chapters, set by the Northeast pattern and the Quebec calendar. Trees come first: trees open in late March and build to an oak-led peak in May. Grasses take the middle of the year: grasses hold from late May into July. Weeds close it out: ragweed builds from mid-August, peaks in September, and is ended by the first hard frost. Mold tracks the region’s humidity rather than a flowering calendar, and it fills the gaps between chapters.
No Quebec allergy season guide is published yet, so this page does not single out signature pollens for Montréal — the calendar above is the Northeast regional pattern, and the plant detail on this page names what today’s feed actually records.
November falls between the main chapters of the Quebec 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 8 months of the Quebec year, March to October — a compressed season, which is why its chapters arrive in quick succession. No Quebec allergy season guide is published yet — this calendar follows the Northeast regional pattern. See Montréal pollen count rankings and Montréal on the pollen heatmap.
How to read this index
Pollen Atlas reports the Montréal 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 Montréal, QC 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.
Montréal in today’s US & Canada picture
At 28 (Low), Montréal ranks joint 21058th of the 90896 cities Pollen Atlas tracks today — in the middle of the combined US & Canada table. The highest reading on the combined table 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 Montréal: Laval, QC (7 miles away) reads 25 (Low); Longueuil, QC (8 miles away) reads 22 (Low); Brossard, QC (9 miles away) reads 22 (Low). Montréal reads 3 points higher than its nearest tracked neighbour today. Across Quebec’s 21 tracked cities, today runs from 5 in Quebec City to 28 in Montréal.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Montréal resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Montréal, QC 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.
Montréal in its local area
Montréal is in Montréal, Quebec, Canada. Its population is 1,762,949 (GeoNames).
Across Quebec’s 21 tracked cities, Montréal ranks 1st today.
Like every Pollen Atlas city page, the Montréal, QC pollen count is refreshed each morning.
Nearby cities
- Laval pollen count (7 miles away)
- Longueuil pollen count (8 miles away)
- Brossard pollen count (9 miles away)
- Terrebonne pollen count (13 miles away)
- Châteauguay pollen count (13 miles away)
- Mascouche pollen count (15 miles away)
From Pollen Atlas News
See how Montréal ranks in today's pollen count rankings — the worst cities for allergies today
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).