Jefferson Valley-Yorktown, NY Pollen Count Today
Jefferson Valley-Yorktown, NY · 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).
Jefferson Valley-Yorktown, NY
Weeds Index
How active weeds pollen is today (0–100).
Jefferson Valley-Yorktown, NY
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Jefferson Valley-Yorktown Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Jefferson Valley-Yorktown residents check each morning
The Jefferson Valley-Yorktown pollen count today is 16 (Low). The main driver is Ragweed, with weed pollen at 21 today. The full split is tree pollen 0.6, grass pollen 0.6, weed pollen 21. 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 Jefferson Valley-Yorktown 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. 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 Jefferson Valley-Yorktown pollen forecast below — it is currently holding, with Saturday the highest day in the window.
This is the pollen count Jefferson Valley-Yorktown residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Jefferson Valley-Yorktown pollen count today?
The Jefferson Valley-Yorktown pollen count today is 16 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Jefferson Valley-Yorktown: this page is updated every morning with the day’s modelled reading.
Jefferson Valley-Yorktown allergies today
Jefferson Valley-Yorktown allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 16 (Low), driven mainly by Ragweed. When people ask about Jefferson Valley-Yorktown allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Jefferson Valley-Yorktown.
Allergies in Jefferson Valley-Yorktown follow the New York 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 Jefferson Valley-Yorktown 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 Jefferson Valley-Yorktown allergy forecast: today reads 16 (Low), and the day-by-day outlook shows whether Jefferson Valley-Yorktown 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 Jefferson Valley-Yorktown today records is this same combined reading — tree, grass, weed and mold in one index.
The Jefferson Valley-Yorktown allergy count today is 16 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Jefferson Valley-Yorktown: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 16 | Low |
| Sunday, November 8 | 16 | Low |
| Monday, November 9 | 16 | Low |
| Tuesday, November 10 | 15 | Low |
| Wednesday, November 11 | 14 | Low |
Pollen Atlas forecasts Jefferson Valley-Yorktown’s pollen count to peak on Saturday at 16 (Low) over the next 5 days.
Pollen by type in Jefferson Valley-Yorktown
What is driving Jefferson Valley-Yorktown’s pollen today
The shape of today’s 16 (Low) is set by weed pollen at 21 (Low on its own scale) — about 95% of the four category readings added together, 20.4 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 New York 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 Jefferson Valley-Yorktown, so the drivers have to be read from the category split above. The New York guide’s account of New York names birch and oak, preceded by elm and maple — 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 14 to 16, never changing band. Today’s 16 sits 1 point above the window’s average of 15.4 — a steady window, in which one day reads much like the next.
Plants affecting Jefferson Valley-Yorktown now
Detailed plant-by-plant readings for Jefferson Valley-Yorktown 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 21 (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.
Jefferson Valley-Yorktown pollen through the year
The Jefferson Valley-Yorktown pollen year runs in chapters, set by the Northeast pattern and the New York 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.
The New York allergy season guide names birch and oak, preceded by elm and maple. New York City’s tree season typically opens one to three weeks ahead of Rochester’s, where Lake Ontario’s cold air delays spring along the shore. The AAFA’s 2025 report ranked New York City in the less-challenging half of its 100 metros, reflecting moderate overall burden despite a real spring peak.
November falls between the main chapters of the New York 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 New York year, March to October — a compressed season, which is why its chapters arrive in quick succession. The full calendar is set out in the New York allergy season guide.
How to read this index
Pollen Atlas reports the Jefferson Valley-Yorktown 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 Jefferson Valley-Yorktown, NY 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.
Jefferson Valley-Yorktown in today’s national picture
At 16 (Low), Jefferson Valley-Yorktown ranks joint 65321st 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 Jefferson Valley-Yorktown: Shrub Oak, NY (2 miles away) reads 16 (Low); Lake Mohegan, NY (3 miles away) reads 16 (Low); Crompond, NY (3 miles away) reads 16 (Low). Jefferson Valley-Yorktown reads exactly level with its nearest tracked neighbour today. Across New York’s 1289 tracked cities, today runs from 5 in Union to 31 in Walden.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Jefferson Valley-Yorktown resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Jefferson Valley-Yorktown, NY 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.
Jefferson Valley-Yorktown in its local area
Jefferson Valley-Yorktown is a census-designated place in Westchester County, New York. Its population is 14,195 (ACS 2023).
Across New York’s 1289 tracked cities, Jefferson Valley-Yorktown ranks joint 242nd today.
Like every Pollen Atlas city page, the Jefferson Valley-Yorktown, NY pollen count is refreshed each morning.
Nearby cities
- Shrub Oak pollen count (2 miles away)
- Lake Mohegan pollen count (3 miles away)
- Crompond pollen count (3 miles away)
- Shenorock pollen count (3 miles away)
- Yorktown Heights pollen count (4 miles away)
- Lincolndale pollen count (4 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).