Thornhill, KY Pollen Count Today
Thornhill, KY · 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).
Thornhill, KY
Weeds Index
How active weeds pollen is today (0–100).
Thornhill, KY
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Thornhill Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Thornhill residents check each morning
The Thornhill pollen count today is 22 (Low). The main driver is Ragweed, with weed pollen at 29 today. Weed pollen leads the split at 29 (Low on its own scale), followed by grass pollen at 1 and tree 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 Thornhill 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 Thornhill pollen forecast below — it is currently holding, with Saturday the highest day in the window.
This is the pollen count Thornhill residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Thornhill pollen count today?
The Thornhill pollen count today is 22 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Thornhill: this page is updated every morning with the day’s modelled reading.
Thornhill allergies today
Thornhill allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 22 (Low), driven mainly by Ragweed. When people ask about Thornhill allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Thornhill.
Allergies in Thornhill follow the Kentucky 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 Thornhill 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 Thornhill allergy forecast: today reads 22 (Low), and the day-by-day outlook shows whether Thornhill 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 Thornhill today records is this same combined reading — tree, grass, weed and mold in one index.
The Thornhill allergy count today is 22 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Thornhill: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 22 | Low |
| Sunday, November 8 | 22 | Low |
| Monday, November 9 | 22 | Low |
| Tuesday, November 10 | 22 | Low |
| Wednesday, November 11 | 20 | Low |
Pollen Atlas forecasts Thornhill’s pollen count to peak on Saturday at 22 (Low) over the next 5 days.
Pollen by type in Thornhill
What is driving Thornhill’s pollen today
The shape of today’s 22 (Low) is set by weed pollen at 29 (Low on its own scale) — about 95% of the four category readings added together, 28 points clear of the next category, grass pollen at 1. 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 is the Kentucky calendar working as expected — November falls in the closing weeks of the state’s weed chapter.
Plant-level detail is not in today’s feed for Thornhill, so the drivers have to be read from the category split above. The Kentucky guide’s account of Kentucky names Kentucky bluegrass and tall fescue — grass is the state’s signature act — the pollens behind readings of this shape in this state — and the split shows how much of today’s total each category is actually carrying.
Across the five-day window the Total Pollen Index runs from 20 to 22, never changing band. Today’s 22 sits 0 points above the window’s average of 21.6 — a steady window, in which one day reads much like the next.
Plants affecting Thornhill now
Detailed plant-by-plant readings for Thornhill 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 1 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 29 (Low).
In the Southeast pattern, the plants that typically shape this city’s year are spring trees, warm-season 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.
Thornhill pollen through the year
Three chapters make the Kentucky pollen year, and Thornhill follows them in the Southeast order. The tree chapter: trees can start as early as February and peak in April. The grass chapter: grasses follow in May and run through the summer. The weed chapter: ragweed runs from mid-August to the first frost. Mold is the quiet fourth player, sustained by river-valley humidity between the pollen waves.
Kentucky runs along a diagonal: the eastern mountains run the shortest season and close first, while the far west runs warmest and longest, and Ohio River bottoms hold the moisture that keeps mold in the count. Kentucky bluegrass anchors the grass act, and tall fescue covers even more acreage, stretching the grass calendar on both ends. The Kentucky guide singles out Kentucky bluegrass and tall fescue — grass is the state’s signature act.
November in Thornhill sits inside the weed chapter of the Kentucky year, in its closing weeks — the part of the calendar today’s readings should be judged against. Between them, the three chapters cover 10 months of the Kentucky year, February to November — a long season by national standards, with only a short quiet gap. The full calendar is set out in the Kentucky allergy season guide.
How to read this index
Pollen Atlas reports the Thornhill 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 Thornhill, KY 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.
Thornhill in today’s national picture
At 22 (Low), Thornhill ranks joint 43357th 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 Thornhill: Glenview Manor, KY (1 miles away) reads 22 (Low); Northfield, KY (1 miles away) reads 22 (Low); Crossgate, KY (1 miles away) reads 22 (Low). Thornhill reads exactly level with its nearest tracked neighbour today. Across Kentucky’s 552 tracked cities, today runs from 11 in Cumberland to 28 in Eminence.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Thornhill resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every ragweed season, allergists in Thornhill, KY 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.
Thornhill in its local area
Across Kentucky’s 552 tracked cities, Thornhill ranks joint 180th today.
Like every Pollen Atlas city page, the Thornhill, KY pollen count is refreshed each morning.
Nearby cities
- Glenview Manor pollen count (1 miles away)
- Northfield pollen count (1 miles away)
- Crossgate pollen count (1 miles away)
- Old Brownsboro Place pollen count (1 miles away)
- Bancroft pollen count (1 miles away)
- Hills and Dales pollen count (1 miles away)
From Pollen Atlas News
See how Thornhill 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).