Ragweed Pollen Count in River Forest, IL — Today

Pollen by type in River Forest

• River Forest tree pollen count
• River Forest grass pollen count
• River Forest pollen count

What is the ragweed pollen count in River Forest today?

The River Forest ragweed pollen index today is 39 (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 River Forest today. See the full River Forest pollen count for the overall index and every type together.

River Forest is a village in Cook County, Illinois. Its population is 11,489 (ACS 2023).

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

Species driving River Forest’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 39 (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 River Forest now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for River Forest. The type summary stands: ragweed pollen reads 39 (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 Illinois allergy season guide singles out the classic tree, grass and ragweed sequence at full strength, with mold as a Chicago co-headliner.

River Forest allergies today

River Forest allergies today are set by the same reading as the River Forest pollen count today: the Total Pollen Index is 30 (Low), and the ragweed pollen index on this page is 39 (Low) of it. When people ask about River Forest allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for River Forest.

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