Spencer, IA Pollen Count
Spencer, IA · Last updated Friday, November 6, 2026
This page shows the most recent reading available for Spencer — from Friday, November 6, 2026 (1 day ago) — not today's reading.
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).
Spencer, IA
Weeds Index
How active weeds pollen is today (0–100).
Spencer, IA
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Spencer Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Spencer residents check each morning
The Spencer pollen count today is 23 (Low). The main driver is Ragweed, with weed pollen at 30 today. Weed pollen leads the split at 30 (Low on its own scale), followed by tree pollen at 0.6 and grass pollen at 0.6. Below, the plant detail and the multi-day outlook show whether today is the pattern or the exception. Pollen Atlas updated this count on Friday, November 6, 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 Spencer 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 Spencer pollen forecast below — it is currently holding, with Friday the highest day in the window.
This is the pollen count Spencer residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Spencer pollen count today?
The Spencer pollen count today is 23 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Spencer: this page is updated every morning with the day’s modelled reading.
Spencer allergies today
Spencer allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 23 (Low), driven mainly by Ragweed. When people ask about Spencer allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Spencer.
Allergies in Spencer 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 Spencer 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 Spencer allergy forecast: today reads 23 (Low), and the day-by-day outlook shows whether Spencer 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 Spencer today records is this same combined reading — tree, grass, weed and mold in one index.
The Spencer allergy count today is 23 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Spencer: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Friday, November 6 | 23 | Low |
| Saturday, November 7 | 22 | Low |
| Sunday, November 8 | 22 | Low |
| Monday, November 9 | 22 | Low |
| Tuesday, November 10 | 22 | Low |
Pollen Atlas forecasts Spencer’s pollen count to peak on Friday at 23 (Low) over the next 5 days.
Pollen by type in Spencer
What is driving Spencer’s pollen today
The shape of today’s 23 (Low) is set by weed pollen at 30 (Low on its own scale) — about 96% of the four category readings added together, 29.4 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 Spencer, 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 22 to 23, never changing band. Today’s 23 sits 1 point above the window’s average of 22.2 — a steady window, in which one day reads much like the next.
Plants affecting Spencer now
Detailed plant-by-plant readings for Spencer 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 30 (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.
Spencer pollen through the year
Three chapters make the Iowa pollen year, and Spencer follows them in the Midwest & Great Lakes order. The tree chapter: trees run from March into May, later near the big lakes. The grass chapter: grasses hold from May through July. The weed chapter: 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.
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. The Iowa guide singles out ragweed, the state’s dominant allergen, over a maple, oak and hickory spring.
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 Spencer 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 Spencer, 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.
Spencer in today’s national picture
At 23 (Low), Spencer ranks joint 41692nd 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 Spencer: Fostoria, IA (7 miles away) reads 28 (Low); Dickens, IA (7 miles away) reads 28 (Low); Everly, IA (8 miles away) reads 28 (Low). Spencer reads 5 points lower than its nearest tracked neighbour today. Across Iowa’s 1026 tracked cities, today runs from 16 in Keokuk to 30 in Grimes.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Spencer resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Spencer, 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.
Spencer in its local area
Spencer is a city in Clay County, Iowa. Its population is 11,393 (ACS 2023).
Across Iowa’s 1026 tracked cities, Spencer ranks joint 916th today.
Like every Pollen Atlas city page, the Spencer, IA pollen count is refreshed each morning.
Nearby cities
- Fostoria pollen count (7 miles away)
- Dickens pollen count (7 miles away)
- Everly pollen count (8 miles away)
- Royal pollen count (9 miles away)
- Greenville pollen count (9 miles away)
- Rossie pollen count (9 miles away)
From Pollen Atlas News
See how Spencer 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).