Ragweed Pollen Count in Rosemont, IL — Today

Pollen by type in Rosemont

• Rosemont tree pollen count
• Rosemont grass pollen count
• Rosemont pollen count

What is the ragweed pollen count in Rosemont today?

The Rosemont ragweed pollen index today is 43 (Moderate) on Pollen Atlas’s modelled 0–100 scale. Moderate

Modelled pollen risk index — not a measured count.

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

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

Species driving Rosemont’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 43 (Moderate) 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 Rosemont now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Rosemont. The type summary stands: ragweed pollen reads 43 (Moderate) 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

Moderate risk. If you have allergies, consider meds and limit exposure during peak hours.

Keep windows closed at midday; shower after being outside.

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 Illinois allergy season guide singles out the classic tree, grass and ragweed sequence at full strength, with mold as a Chicago co-headliner.

Rosemont allergies today

Rosemont allergies today are set by the same reading as the Rosemont pollen count today: the Total Pollen Index is 33 (Low), and the ragweed pollen index on this page is 43 (Moderate) of it. When people ask about Rosemont allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Rosemont.

Allergies in Rosemont follow the Illinois calendar set out on the full Rosemont 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 Rosemont 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 Rosemont allergy forecast for the ragweed pollen season: it shows whether Rosemont 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.