Ragweed Pollen Count in Grass Lake, MI — Today

Updated Saturday, November 7, 2026

Pollen by type in Grass Lake

What is the ragweed pollen count in Grass Lake today?

The Grass Lake ragweed pollen index today is 33 (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 Grass Lake today. See the full Grass Lake pollen count for the overall index and every type together.

Grass Lake Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 725Low
Sunday, November 825Low
Monday, November 925Low
Tuesday, November 1025Low
Wednesday, November 1125Low

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

Species driving Grass Lake’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 33 (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 Grass Lake now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Grass Lake. The type summary stands: ragweed pollen reads 33 (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 ragweed pollen level means

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

Enjoy outdoor activities.

Ragweed builds from mid-August, peaks in September, and ends at the first frost. This month sits outside the usual ragweed pollen window for the Midwest & Great Lakes pattern, so today’s ragweed pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The Michigan allergy season guide singles out birch and oak in a compressed late-spring stack, and ragweed as the heavy fall finish.

Grass Lake allergies today

Grass Lake allergies today are set by the same reading as the Grass Lake pollen count today: the Total Pollen Index is 25 (Low), and the ragweed pollen index on this page is 33 (Low) of it. When people ask about Grass Lake allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Grass Lake.

Allergies in Grass Lake follow the Michigan calendar set out on the full Grass Lake 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 Grass Lake 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 Grass Lake allergy forecast for the ragweed pollen season: it shows whether Grass Lake 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 Grass Lake pollen count — all types, the overall index and today’s ranking context

Grass Lake tree pollen count

Grass Lake grass pollen count

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

See Grass Lake on the pollen map

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

Michigan allergy season guide

Ragweed season

Find an allergist in Grass Lake, MI

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).