Ragweed Pollen Count in Chelsea, SD — Today

Pollen by type in Chelsea

• Chelsea tree pollen count
• Chelsea grass pollen count
• Chelsea pollen count

What is the ragweed pollen count in Chelsea today?

The Chelsea ragweed pollen index today is 30 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Ragweed pollen is the dominant allergen in Chelsea today. See the full Chelsea pollen count for the overall index and every type together.

Chelsea Ragweed Pollen Count: 5-Day Forecast

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 Chelsea’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Chelsea’s ragweed pollen

Species-level counts are not part of the modelled data Pollen Atlas publishes — the modelled index is reported per pollen type, not per species — so this section gives the type summary: ragweed pollen reads 30 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

How to read this: the “ragweed” figure on this site is the modelled weed pollen index — the weed group (ragweed + mugwort) — printed under the ragweed name the rankings use.

Plants affecting Chelsea now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Chelsea. The type summary stands: ragweed pollen reads 30 (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 ragweed pollen level means

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

Enjoy outdoor activities.

Ragweed in the east and sagebrush in the west run from August until the first hard frost. This month sits outside the usual ragweed pollen window for the Northern Plains pattern, so today’s ragweed 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.

Chelsea allergies today

Chelsea allergies today are set by the same reading as the Chelsea pollen count today: the Total Pollen Index is 23 (Low), and the ragweed pollen index on this page is 30 (Low) of it. When people ask about Chelsea allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Chelsea.

Allergies in Chelsea follow the South Dakota calendar set out on the full Chelsea 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 Chelsea before heading outdoors, the ragweed 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 Chelsea allergy forecast for the ragweed pollen season: it shows whether Chelsea 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.