Whitchurch-Stouffville, ON Pollen Count Today
Whitchurch-Stouffville, ON · 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).
Whitchurch-Stouffville, ON
Weeds Index
How active weeds pollen is today (0–100).
Whitchurch-Stouffville, ON
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Whitchurch-Stouffville Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Whitchurch-Stouffville residents check each morning
The Whitchurch-Stouffville pollen count today is 37 (Low). The main driver is Ragweed, with weed pollen at 48 today. The full split is tree pollen 0.6, grass pollen 0.6, weed pollen 48. 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 Whitchurch-Stouffville 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 Plains and around the Great Lakes, ragweed is a familiar late-season plant of open ground, field edges and disturbed soil, which is why it so often leads inland autumn readings.
To see whether today’s pollen level holds, check the 5-day Whitchurch-Stouffville pollen forecast below — it is currently holding, with Saturday the highest day in the window.
This is the pollen count Whitchurch-Stouffville residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Whitchurch-Stouffville pollen count today?
The Whitchurch-Stouffville pollen count today is 37 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Whitchurch-Stouffville: this page is updated every morning with the day’s modelled reading.
Whitchurch-Stouffville allergies today
Whitchurch-Stouffville allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 37 (Low), driven mainly by Ragweed. When people ask about Whitchurch-Stouffville allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Whitchurch-Stouffville.
Allergies in Whitchurch-Stouffville follow the Ontario 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 Whitchurch-Stouffville 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 Whitchurch-Stouffville allergy forecast: today reads 37 (Low), and the day-by-day outlook shows whether Whitchurch-Stouffville 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 Whitchurch-Stouffville today records is this same combined reading — tree, grass, weed and mold in one index.
The Whitchurch-Stouffville allergy count today is 37 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Whitchurch-Stouffville: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 37 | Moderate |
| Sunday, November 8 | 36 | Moderate |
| Monday, November 9 | 36 | Moderate |
| Tuesday, November 10 | 36 | Moderate |
| Wednesday, November 11 | 35 | Moderate |
Pollen Atlas forecasts Whitchurch-Stouffville’s pollen count to peak on Saturday at 37 (Moderate) over the next 5 days.
Pollen by type in Whitchurch-Stouffville
What is driving Whitchurch-Stouffville’s pollen today
The shape of today’s 37 (Low) is set by weed pollen at 48 (Moderate on its own scale) — about 98% of the four category readings added together, 47.4 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 Ontario 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 Whitchurch-Stouffville, 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 35 to 37, never changing band. Today’s 37 sits 1 point above the window’s average of 36 — a steady window, in which one day reads much like the next.
Plants affecting Whitchurch-Stouffville now
Detailed plant-by-plant readings for Whitchurch-Stouffville 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 48 (Moderate).
In the Midwest & Great Lakes pattern, the plants that typically shape this city’s year are spring trees, late-spring and summer grasses, and late-summer and autumn 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.
Whitchurch-Stouffville pollen through the year
The Whitchurch-Stouffville pollen year runs in chapters, set by the Midwest & Great Lakes pattern and the Ontario calendar. Trees come first: trees run from March into May, later near the big lakes. Grasses take the middle of the year: grasses hold from May through July. Weeds close it out: ragweed builds from mid-August, peaks in September, and ends at the first frost. Mold builds through the humid summer and fills the gaps between chapters.
No Ontario allergy season guide is published yet, so this page does not single out signature pollens for Whitchurch-Stouffville — the calendar above is the Midwest & Great Lakes regional pattern, and the plant detail on this page names what today’s feed actually records.
November falls between the main chapters of the Ontario 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 Ontario year, March to October — a compressed season, which is why its chapters arrive in quick succession. No Ontario allergy season guide is published yet — this calendar follows the Midwest & Great Lakes regional pattern. See Whitchurch-Stouffville pollen count rankings and Whitchurch-Stouffville on the pollen heatmap.
How to read this index
Pollen Atlas reports the Whitchurch-Stouffville 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 Whitchurch-Stouffville, ON 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.
Whitchurch-Stouffville in today’s US & Canada picture
At 37 (Low), Whitchurch-Stouffville ranks joint 4127th 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 Whitchurch-Stouffville: Markham, ON (8 miles away) reads 33 (Low); Aurora, ON (10 miles away) reads 19 (Low); Richmond Hill, ON (11 miles away) reads 30 (Low). Whitchurch-Stouffville reads 4 points higher than its nearest tracked neighbour today. Across Ontario’s 41 tracked cities, today runs from 5 in Ottawa to 37 in Whitchurch-Stouffville.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Whitchurch-Stouffville resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Whitchurch-Stouffville, ON 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.
Whitchurch-Stouffville in its local area
Whitchurch-Stouffville is in York, Ontario, Canada. Its population is 49,864 (GeoNames).
Across Ontario’s 41 tracked cities, Whitchurch-Stouffville ranks 1st today.
Like every Pollen Atlas city page, the Whitchurch-Stouffville, ON pollen count is refreshed each morning.
Nearby cities
- Markham pollen count (8 miles away)
- Aurora pollen count (10 miles away)
- Richmond Hill pollen count (11 miles away)
- Newmarket pollen count (11 miles away)
- Pickering pollen count (13 miles away)
- Ajax pollen count (14 miles 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).