Ragweed Pollen Count in Harvey, MI — Today

Updated Saturday, November 7, 2026

Pollen by type in Harvey

What is the ragweed pollen count in Harvey today?

The Harvey ragweed pollen index today is 19 (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 Harvey today. See the full Harvey pollen count for the overall index and every type together.

Harvey Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 716Low
Sunday, November 816Low
Monday, November 916Low
Tuesday, November 1015Low
Wednesday, November 1111Low

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

Species driving Harvey’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 19 (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 Harvey now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Harvey. The type summary stands: ragweed pollen reads 19 (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.

Harvey allergies today

Harvey allergies today are set by the same reading as the Harvey pollen count today: the Total Pollen Index is 16 (Low), and the ragweed pollen index on this page is 19 (Low) of it. When people ask about Harvey allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Harvey.

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

Harvey tree pollen count

Harvey grass pollen count

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

See Harvey on the pollen map

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

Michigan allergy season guide

Ragweed season

Find an allergist in Harvey, 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).