Chesterton, IN Pollen Count
Chesterton, IN · Last updated Friday, November 6, 2026
This page shows the most recent reading available for Chesterton — 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).
Chesterton, IN
Weeds Index
How active weeds pollen is today (0–100).
Chesterton, IN
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Chesterton Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Chesterton residents check each morning
The Chesterton pollen count today is 21 (Low). The main driver is Ragweed, with weed pollen at 27 today. Weed pollen leads the split at 27 (Low on its own scale), followed by grass pollen at 1 and tree 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 Chesterton 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 Chesterton pollen forecast below — it is currently holding, with Friday the highest day in the window.
This is the pollen count Chesterton residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Chesterton pollen count today?
The Chesterton pollen count today is 21 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Chesterton: this page is updated every morning with the day’s modelled reading.
Chesterton allergies today
Chesterton allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 21 (Low), driven mainly by Ragweed. When people ask about Chesterton allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Chesterton.
Allergies in Chesterton follow the Indiana 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 Chesterton 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 Chesterton allergy forecast: today reads 21 (Low), and the day-by-day outlook shows whether Chesterton 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 Chesterton today records is this same combined reading — tree, grass, weed and mold in one index.
The Chesterton allergy count today is 21 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Chesterton: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Friday, November 6 | 21 | Low |
| Saturday, November 7 | 20 | Low |
| Sunday, November 8 | 20 | Low |
| Monday, November 9 | 20 | Low |
| Tuesday, November 10 | 20 | Low |
Pollen Atlas forecasts Chesterton’s pollen count to peak on Friday at 21 (Low) over the next 5 days.
Pollen by type in Chesterton
What is driving Chesterton’s pollen today
The shape of today’s 21 (Low) is set by weed pollen at 27 (Low on its own scale) — about 94% of the four category readings added together, 26 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 Indiana 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 Chesterton, so the drivers have to be read from the category split above. The Indiana guide’s account of Indiana names ragweed above all — the state’s defining allergen — over a maple, elm and oak 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 20 to 21, never changing band. Today’s 21 sits 1 point above the window’s average of 20.2 — a steady window, in which one day reads much like the next.
Plants affecting Chesterton now
Detailed plant-by-plant readings for Chesterton 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 27 (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.
Chesterton pollen through the year
Three chapters make the Indiana pollen year, and Chesterton 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.
April, May and September are Indiana’s peak months: spring trees, then the tree–grass overlap, then the ragweed crest. The south starts two to three weeks ahead of the north: Evansville’s Ohio River valley warms earlier, keeps mold longer, and meets frost later than the Lake Michigan shore. The Indiana guide singles out ragweed above all — the state’s defining allergen — over a maple, elm and oak spring.
November falls between the main chapters of the Indiana 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 Indiana year, March to October — a compressed season, which is why its chapters arrive in quick succession. The full calendar is set out in the Indiana allergy season guide.
How to read this index
Pollen Atlas reports the Chesterton 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 Chesterton, IN 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.
Chesterton in today’s national picture
At 21 (Low), Chesterton ranks joint 47143rd 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 Chesterton: Porter, IN (2 miles away) reads 21 (Low); Burns Harbor, IN (4 miles away) reads 21 (Low); Dune Acres, IN (4 miles away) reads 11 (Low). Chesterton reads exactly level with its nearest tracked neighbour today. Across Indiana’s 973 tracked cities, today runs from 9 in Beverly Shores to 35 in Zionsville.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Chesterton resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Chesterton, IN 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.
Chesterton in its local area
Chesterton is a town in Porter County, Indiana. Its population is 14,326 (ACS 2023).
Across Indiana’s 973 tracked cities, Chesterton ranks joint 716th today.
Like every Pollen Atlas city page, the Chesterton, IN pollen count is refreshed each morning.
Nearby cities
- Porter pollen count (2 miles away)
- Burns Harbor pollen count (4 miles away)
- Dune Acres pollen count (4 miles away)
- South Haven pollen count (6 miles away)
- Portage pollen count (6 miles away)
- Ogden Dunes pollen count (7 miles away)
From Pollen Atlas News
See how Chesterton 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).