Grass Pollen Count in Oak Park, IL — Today
Updated Saturday, November 7, 2026
Pollen by type in Oak Park
What is the grass pollen count in Oak Park today?
The Oak Park grass pollen index today is 1 (Low) on Pollen Atlas’s modelled 0–100 scale. Low
Modelled pollen risk index — not a measured count.
Oak Park’s overall pollen count today is 30 (Low) across all types. See the full Oak Park pollen count for the overall index and every type together.
Oak Park is a village in Cook County, Illinois. Its population is 53,315 (ACS 2023).
Oak Park Grass Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Saturday, November 7 | 30 | Low |
| Sunday, November 8 | 30 | Low |
| Monday, November 9 | 29 | Low |
| Tuesday, November 10 | 29 | Low |
| Wednesday, November 11 | 29 | Low |
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 Oak Park’s overall trend across the week. Today’s grass pollen reading is the headline above.
Species driving Oak Park’s grass pollen
The modelled data reports grass as one combined index — there is no species-by-species split for grass anywhere in the data, so this page does not invent one. Today’s modelled grass index for Oak Park is 1 (Low), and the 5-day overall trend above shows the shape of the week.
As regional context only — not as today’s readings — 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.
The Illinois allergy season guide singles out the classic tree, grass and ragweed sequence at full strength, with mold as a Chicago co-headliner.
Plants affecting Oak Park now — grass pollen
Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Oak Park. The type summary stands: grass pollen reads 1 (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 grass pollen level means
Low risk. Keep windows open; consider allergy meds only if sensitive.
Enjoy outdoor activities.
Grasses hold from May through July. This month sits outside the usual grass pollen window for the Midwest & Great Lakes pattern, so today’s grass 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.
Oak Park allergies today
Oak Park allergies today are set by the same reading as the Oak Park pollen count today: the Total Pollen Index is 30 (Low), and the grass pollen index on this page is 1 (Low) of it. When people ask about Oak Park allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Oak Park.
Allergies in Oak Park follow the Illinois calendar set out on the full Oak Park 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 Oak Park before heading outdoors, the grass 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 Oak Park allergy forecast for the grass pollen season: it shows whether Oak Park 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 Oak Park pollen count — all types, the overall index and today’s ranking context
See how Oak Park ranks in today's pollen count rankings — the worst cities for allergies today
See Oak Park on the pollen map
Every pollen type, with photos and seasons: the pollen directory
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).