Grass Pollen Count in Rapid Valley, SD — Today

Updated Saturday, November 7, 2026

Pollen by type in Rapid Valley

What is the grass pollen count in Rapid Valley today?

The Rapid Valley 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.

Rapid Valley’s overall pollen count today is 21 (Low) across all types. See the full Rapid Valley pollen count for the overall index and every type together.

Rapid Valley Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 721Low
Sunday, November 821Low
Monday, November 920Low
Tuesday, November 1020Low
Wednesday, November 1116Low

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 Rapid Valley’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Rapid Valley’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 Rapid Valley 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 Rapid Valley now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Rapid Valley. 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.

Rapid Valley allergies today

Rapid Valley allergies today are set by the same reading as the Rapid Valley pollen count today: the Total Pollen Index is 21 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Rapid Valley allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Rapid Valley.

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

Rapid Valley tree pollen count

Rapid Valley ragweed pollen count

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

See Rapid Valley 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 Rapid Valley, 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).