Le Mars, IA Pollen Count Today
Le Mars, IA · 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).
Le Mars, IA
Weeds Index
How active weeds pollen is today (0–100).
Le Mars, IA
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Le Mars Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Le Mars residents check each morning
The Le Mars pollen count today is 22 (Low). The main driver is Ragweed, with weed pollen at 29 today. The full split is tree pollen 0.6, grass pollen 0.6, weed pollen 29. 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 Le Mars 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 Plains and around the Great Lakes, ragweed is a familiar late-season plant of open ground, field edges and disturbed soil, which is why it so often leads inland autumn readings.
To see whether today’s pollen level holds, check the 5-day Le Mars pollen forecast below — it is currently easing, with Saturday the highest day in the window.
This is the pollen count Le Mars residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Le Mars pollen count today?
The Le Mars 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 Le Mars: this page is updated every morning with the day’s modelled reading.
Le Mars allergies today
Le Mars 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 Le Mars allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Le Mars.
Allergies in Le Mars follow the Iowa 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 Le Mars 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 Le Mars allergy forecast: today reads 22 (Low), and the day-by-day outlook shows whether Le Mars 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 Le Mars today records is this same combined reading — tree, grass, weed and mold in one index.
The Le Mars allergy count today is 22 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Le Mars: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 22 | Low |
| Sunday, November 8 | 16 | Low |
| Monday, November 9 | 11 | Low |
| Tuesday, November 10 | 5 | Low |
| Wednesday, November 11 | 5 | Low |
Pollen Atlas forecasts Le Mars’s pollen count to peak on Saturday at 22 (Low) over the next 5 days.
Pollen by type in Le Mars
What is driving Le Mars’s pollen today
The shape of today’s 22 (Low) is set by weed pollen at 29 (Low on its own scale) — about 96% of the four category readings added together, 28.4 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 Iowa 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 Le Mars, so the drivers have to be read from the category split above. The Iowa guide’s account of Iowa names ragweed, the state’s dominant allergen, over a maple, oak and hickory spring — 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 5 to 22, never changing band. Today’s 22 sits 10 points above the window’s average of 11.8 — a moving window, worth reading day by day rather than from the average.
Plants affecting Le Mars now
Detailed plant-by-plant readings for Le Mars 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 29 (Low).
In the Midwest & Great Lakes pattern, the plants that typically shape this city’s year are spring trees, late-spring and summer grasses, and late-summer and autumn 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.
Le Mars pollen through the year
The Le Mars pollen year runs in chapters, set by the Midwest & Great Lakes pattern and the Iowa calendar. Trees come first: trees run from March into May, later near the big lakes. Grasses take the middle of the year: grasses hold from May through July. Weeds close it out: ragweed builds from mid-August, peaks in September, and ends at the first frost. Mold builds through the humid summer and fills the gaps between chapters.
The Iowa allergy season guide names ragweed, the state’s dominant allergen, over a maple, oak and hickory spring. Des Moines finished in the top ten of the Asthma and Allergy Foundation of America’s 2024 Allergy Capitals list, reflecting that complete, high-volume calendar. The river valleys are the tree reservoirs: oak-hickory floodplain woodland along the Des Moines, Cedar, Iowa and Mississippi rivers feeds the spring season through valley towns.
November falls between the main chapters of the Iowa 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 Iowa year, March to October — a compressed season, which is why its chapters arrive in quick succession. The full calendar is set out in the Iowa allergy season guide.
How to read this index
Pollen Atlas reports the Le Mars 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 Le Mars, IA 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.
Le Mars in today’s national picture
At 22 (Low), Le Mars 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 Le Mars: Brunsville, IA (5 miles away) reads 22 (Low); Merrill, IA (6 miles away) reads 22 (Low); Oyens, IA (6 miles away) reads 28 (Low). Le Mars reads exactly level with its nearest tracked neighbour today. Across Iowa’s 1026 tracked cities, today runs from 13 in McGregor to 30 in Grimes.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Le Mars resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Le Mars, IA 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.
Le Mars in its local area
Le Mars is a city in Plymouth County, Iowa. Its population is 10,597 (ACS 2023).
Across Iowa’s 1026 tracked cities, Le Mars ranks joint 849th today.
Like every Pollen Atlas city page, the Le Mars, IA pollen count is refreshed each morning.
Nearby cities
- Brunsville pollen count (5 miles away)
- Merrill pollen count (6 miles away)
- Oyens pollen count (6 miles away)
- Struble pollen count (8 miles away)
- Remsen pollen count (10 miles away)
- Craig pollen count (10 miles away)
From Pollen Atlas News
See how Le Mars 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).