Grass Pollen Count in Lake Madison, SD — Today

Updated Saturday, November 7, 2026

Pollen by type in Lake Madison

What is the grass pollen count in Lake Madison today?

The Lake Madison grass pollen index today is 0.6 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Lake Madison’s overall pollen count today is 24 (Low) across all types. See the full Lake Madison pollen count for the overall index and every type together.

Lake Madison Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 724Low
Sunday, November 818Low
Monday, November 912Low
Tuesday, November 105Low
Wednesday, November 115Low

Pollen Atlas models the daily detail as an overall index: day-by-day splits by individual pollen type are not part of the modelled data, so this table shows Lake Madison’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Lake Madison’s grass pollen

The modelled data reports grass as one combined index — there is no species-by-species split for grass anywhere in the data, so this page does not invent one. Today’s modelled grass index for Lake Madison is 0.6 (Low), and the 5-day overall trend above shows the shape of the week.

As regional context only — not as today’s readings — in the Northern Plains pattern, the plants that typically shape this city’s year are river-corridor cottonwood, elm and ash in spring, summer grasses, and a divided fall — ragweed in the east, sagebrush in the west.

The South Dakota allergy season guide singles out river-corridor cottonwood, elm and ash in spring, and a divided fall — ragweed in the east, sagebrush in the west.

Plants affecting Lake Madison now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Lake Madison. The type summary stands: grass pollen reads 0.6 (Low) today.

In the Northern Plains pattern, the plants that typically shape this city’s year are river-corridor cottonwood, elm and ash in spring, summer grasses, and a divided fall — ragweed in the east, sagebrush in the west — named here as regional context only, not as today’s readings.

Plant detail returns here automatically on any day the feed includes it.

What this grass pollen level means

Low risk. Keep windows open; consider allergy meds only if sensitive.

Enjoy outdoor activities.

Grasses run from May into July, peaking in June and July. This month sits outside the usual grass pollen window for the Northern Plains pattern, so today’s grass pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The South Dakota allergy season guide singles out river-corridor cottonwood, elm and ash in spring, and a divided fall — ragweed in the east, sagebrush in the west.

Lake Madison allergies today

Lake Madison allergies today are set by the same reading as the Lake Madison pollen count today: the Total Pollen Index is 24 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Lake Madison allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Lake Madison.

Allergies in Lake Madison follow the South Dakota calendar set out on the full Lake Madison page — the chapters, the plants behind them, and the 5-day forecast show whether today is typical for the season or an exception to it. If you are checking allergies today in Lake Madison before heading outdoors, the grass pollen split on this page is the part to read: it shows whether this pollen type is doing the work today, not just how high the total sits.

Read the five-day overall trend above as the Lake Madison allergy forecast for the grass pollen season: it shows whether Lake Madison allergies are set to ease or build across the week, day by day — the days to plan outdoor time around are the ones where the overall index steps down, not just today.

See the full Lake Madison pollen count — all types, the overall index and today’s ranking context

Lake Madison tree pollen count

Lake Madison ragweed pollen count

See how Lake Madison ranks in today's pollen count rankings — the worst cities for allergies today

See Lake Madison on the pollen map

Every pollen type, with photos and seasons: the pollen directory

South Dakota allergy season guide

Grass pollen season

Find an allergist in Lake Madison, SD

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).