Grass Pollen Count in Sun Prairie, WI

Last updated Saturday, November 7, 2026

This page shows the most recent reading available for Sun Prairie — from Saturday, November 7, 2026 (1 day ago) — not today's reading.

Pollen by type in Sun Prairie

What is the grass pollen count in Sun Prairie today?

The Sun Prairie 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.

Sun Prairie’s overall pollen count today is 37 (Low) across all types. See the full Sun Prairie pollen count for the overall index and every type together.

Sun Prairie is a city in Dane County, Wisconsin. Its population is 36,455 (ACS 2023).

Sun Prairie Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 737Low
Sunday, November 829Low
Monday, November 922Low
Tuesday, November 1015Low
Wednesday, November 117Low

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 Sun Prairie’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Sun Prairie’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 Sun Prairie 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 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.

The Wisconsin allergy season guide singles out oak in the south and birch in the north, and a September ragweed peak over the farmland.

Plants affecting Sun Prairie now — grass pollen

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

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’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 hold from May through July. This month sits outside the usual grass pollen window for the Midwest & Great Lakes pattern, so today’s grass pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The Wisconsin allergy season guide singles out oak in the south and birch in the north, and a September ragweed peak over the farmland.

Sun Prairie allergies today

Sun Prairie allergies today are set by the same reading as the Sun Prairie pollen count today: the Total Pollen Index is 37 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Sun Prairie allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Sun Prairie.

Allergies in Sun Prairie follow the Wisconsin calendar set out on the full Sun Prairie 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 Sun Prairie 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 Sun Prairie allergy forecast for the grass pollen season: it shows whether Sun Prairie 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 Sun Prairie pollen count — all types, the overall index and today’s ranking context

Sun Prairie tree pollen count

Sun Prairie ragweed pollen count

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

See Sun Prairie on the pollen map

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

Wisconsin allergy season guide

Grass pollen season

Find an allergist in Sun Prairie, WI

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).