Lewiston, NY Pollen Count

What is the Lewiston pollen count today?

The Lewiston pollen count today is 20 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.

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

Lewiston allergies today

Lewiston allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 20 (Low), driven mainly by Ragweed. When people ask about Lewiston allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Lewiston.

Allergies in Lewiston 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 Lewiston 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 Lewiston allergy forecast: today reads 20 (Low), and the day-by-day outlook shows whether Lewiston 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 Lewiston today records is this same combined reading — tree, grass, weed and mold in one index.

The Lewiston allergy count today is 20 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.

Pollen count today Lewiston: the 5-day forecast

Pollen Atlas forecasts Lewiston’s pollen count to peak on Friday at 20 (Low) over the next 5 days.

Pollen by type in Lewiston

• Lewiston tree pollen count
• Lewiston grass pollen count
• Lewiston ragweed pollen count

What is driving Lewiston’s pollen today

The shape of today’s 20 (Low) is set by weed pollen at 26 (Low on its own scale) — about 94% of the four category readings added together, 25 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 Lewiston, 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 16 to 20, never changing band. Today’s 20 sits 1 point above the window’s average of 19.2 — a steady window, in which one day reads much like the next.

Plants affecting Lewiston now

Detailed plant-by-plant readings for Lewiston 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 26 (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.

Lewiston pollen through the year

The Lewiston 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 Lewiston 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 Lewiston, 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.

Lewiston in today’s national picture

At 20 (Low), Lewiston ranks joint 50794th 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 Lewiston: Niagara University, NY (2 miles away) reads 16 (Low); Youngstown, NY (5 miles away) reads 20 (Low); Niagara Falls, NY (6 miles away) reads 16 (Low). Lewiston reads 4 points higher than 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 Lewiston resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Lewiston, 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.

Lewiston in its local area

Across New York’s 1289 tracked cities, Lewiston ranks joint 132nd today.

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

Nearby cities

• Niagara University pollen count (2 miles away)
• Youngstown pollen count (5 miles away)
• Niagara Falls pollen count (6 miles away)
• Ransomville pollen count (8 miles away)
• Sanborn pollen count (8 miles away)
• North Tonawanda pollen count (12 miles away)

From Pollen Atlas News

• New York allergy season
• Ragweed season