Syosset, NY Pollen Count

What is the Syosset pollen count today?

The Syosset pollen count today is 13 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.

Short answer for anyone searching pollen count today Syosset: this page is updated every morning with the day’s modelled reading.

Syosset allergies today

Syosset allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 13 (Low), driven mainly by Ragweed. When people ask about Syosset allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Syosset.

Allergies in Syosset 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 Syosset 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 Syosset allergy forecast: today reads 13 (Low), and the day-by-day outlook shows whether Syosset 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 Syosset today records is this same combined reading — tree, grass, weed and mold in one index.

The Syosset allergy count today is 13 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.

Pollen count today Syosset: the 5-day forecast

Pollen Atlas forecasts Syosset’s pollen count to peak on Saturday at 31 (Low) over the next 5 days.

Pollen by type in Syosset

• Syosset tree pollen count
• Syosset grass pollen count
• Syosset ragweed pollen count

What is driving Syosset’s pollen today

The shape of today’s 13 (Low) is set by weed pollen at 17 (Low on its own scale) — about 91% of the four category readings added together, 16 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 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 Syosset, 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 13 to 31, never changing band. Today’s 13 sits 14 points below the window’s average of 26.8 — a moving window, worth reading day by day rather than from the average.

Plants affecting Syosset now

Detailed plant-by-plant readings for Syosset 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 17 (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.

Syosset pollen through the year

Three chapters make the New York pollen year, and Syosset follows them in the Northeast order. The tree chapter: trees open in late March and build to an oak-led peak in May. The grass chapter: grasses hold from late May into July. The weed chapter: 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.

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. The New York guide singles out birch and oak, preceded by elm and maple.

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 Syosset 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 Syosset, 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.

Syosset in today’s national picture

At 13 (Low), Syosset ranks joint 72051st of the 90896 cities Pollen Atlas tracks today — in the middle of the national table. The highest reading in the country today is Serpa, Portugal at 53, and the lowest is Galiakberovo, Russia at 5. The whole table spans 48 points today — a wide-open day, when the top and bottom of the table are effectively in different seasons.

Around Syosset: Oyster Bay, NY (1 miles away) reads 13 (Low); Woodbury, NY (2 miles away) reads 13 (Low); Muttontown, NY (2 miles away) reads 13 (Low). Syosset reads exactly level with its nearest tracked neighbour today. Across New York’s 1289 tracked cities, today runs from 5 in Union to 29 in Scottsville.

Pollen totals are population numbers; symptoms are personal. The same reading can leave one Syosset resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Syosset, 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.

Syosset in its local area

Syosset is a census-designated place in Nassau County, New York. Its population is 18,274 (ACS 2023).

Syosset sits 4 miles north-northeast of Hicksville, NY — the anchor of the forecast-point group this reading belongs to. Within the group of 34, Syosset ranks joint 14th; across New York’s 1289 tracked cities, it ranks joint 367th today.

Like every Pollen Atlas city page, the Syosset, NY pollen count is refreshed each morning.

Nearby cities

• Oyster Bay pollen count (1 miles away)
• Woodbury pollen count (2 miles away)
• Muttontown pollen count (2 miles away)
• East Norwich pollen count (3 miles away)
• Plainview pollen count (3 miles away)
• Jericho pollen count (3 miles away)

From Pollen Atlas News

• New York allergy season
• Ragweed season