Irwin, SC Pollen Count

What is the Irwin pollen count today?

The Irwin pollen count today is 6 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.

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

Irwin allergies today

Irwin allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 6 (Low), driven mainly by Ragweed. When people ask about Irwin allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Irwin.

Allergies in Irwin follow the South Carolina 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 Irwin 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 Irwin allergy forecast: today reads 6 (Low), and the day-by-day outlook shows whether Irwin 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 Irwin today records is this same combined reading — tree, grass, weed and mold in one index.

The Irwin allergy count today is 6 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.

Pollen count today Irwin: the 5-day forecast

Pollen Atlas forecasts Irwin’s pollen count to peak on Saturday at 14 (Low) over the next 5 days.

Pollen by type in Irwin

• Irwin tree pollen count
• Irwin grass pollen count
• Irwin ragweed pollen count

What is driving Irwin’s pollen today

The shape of today’s 6 (Low) is set by weed pollen at 7 (Low on its own scale) — about 58% of the four category readings added together, 3 points clear of the next category, tree pollen at 4. 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 South Carolina 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 Irwin, so the drivers have to be read from the category split above. The South Carolina guide’s account of South Carolina names oak — the pine dust filming cars in the same weeks is a comparatively weak allergen — 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 6 to 14, never changing band. Today’s 6 sits 6 points below the window’s average of 12.2 — a moving window, worth reading day by day rather than from the average.

Plants affecting Irwin now

Detailed plant-by-plant readings for Irwin 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 4 (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 7 (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.

Irwin pollen through the year

Three chapters make the South Carolina pollen year, and Irwin 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.

South Carolina’s season opens in February in warm years and can still be going in November in the southern half of the state; Greenville ranked ninth in the AAFA’s 2025 Allergy Capitals report. Warm-season grasses such as Bermuda grass pollinate from late spring deep into summer, with mold layered over the humid middle of the year. The South Carolina guide singles out oak — the pine dust filming cars in the same weeks is a comparatively weak allergen.

November in Irwin sits inside the weed chapter of the South Carolina 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 South Carolina year, February to November — a long season by national standards, with only a short quiet gap. The full calendar is set out in the South Carolina allergy season guide.

How to read this index

Pollen Atlas reports the Irwin 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 Irwin, SC 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.

Irwin in today’s national picture

At 6 (Low), Irwin ranks joint 84922nd 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 Irwin: Lancaster, SC (3 miles away) reads 6 (Low); Fort Lawn, SC (4 miles away) reads 6 (Low); Elgin, SC (6 miles away) reads 6 (Low). Irwin reads exactly level with its nearest tracked neighbour today. Across South Carolina’s 472 tracked cities, today runs from 5 in Great Falls to 19 in Pelion.

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

Irwin in its local area

Across South Carolina’s 472 tracked cities, Irwin ranks joint 446th today.

Like every Pollen Atlas city page, the Irwin, SC pollen count is refreshed each morning.

Nearby cities

• Lancaster pollen count (3 miles away)
• Fort Lawn pollen count (4 miles away)
• Elgin pollen count (6 miles away)
• Great Falls pollen count (10 miles away)
• Unity pollen count (11 miles away)
• Heath Springs pollen count (11 miles away)

From Pollen Atlas News

• South Carolina allergy season
• Ragweed season