Tree Pollen Count in Carol Stream, IL
Last updated Friday, November 6, 2026
This page shows the most recent reading available for Carol Stream — from Friday, November 6, 2026 (1 day ago) — not today's reading.
Pollen by type in Carol Stream
What is the tree pollen count in Carol Stream today?
The Carol Stream tree pollen index today is 0.6 (Low) on Pollen Atlas’s modelled 0–100 scale. Low
Modelled pollen risk index — not a measured count.
Carol Stream’s overall pollen count today is 32 (Low) across all types. See the full Carol Stream pollen count for the overall index and every type together.
Carol Stream is a village in DuPage County, Illinois. Its population is 39,427 (ACS 2023).
Carol Stream Tree Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Friday, November 6 | 32 | Low |
| Saturday, November 7 | 32 | Low |
| Sunday, November 8 | 31 | Low |
| Monday, November 9 | 31 | Low |
| Tuesday, November 10 | 31 | 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 Carol Stream’s overall trend across the week. Today’s tree pollen reading is the headline above.
Species driving Carol Stream’s tree 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: tree pollen reads 0.6 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.
Plants affecting Carol Stream now — tree pollen
Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Carol Stream. The type summary stands: tree pollen reads 0.6 (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 tree pollen level means
Low risk. Keep windows open; consider allergy meds only if sensitive.
Enjoy outdoor activities.
Trees run from March into May, later near the big lakes. This month sits outside the usual tree pollen window for the Midwest & Great Lakes pattern, so today’s tree 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.
Carol Stream allergies today
Carol Stream allergies today are set by the same reading as the Carol Stream pollen count today: the Total Pollen Index is 32 (Low), and the tree pollen index on this page is 0.6 (Low) of it. When people ask about Carol Stream allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Carol Stream.
Allergies in Carol Stream follow the Illinois calendar set out on the full Carol Stream 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 Carol Stream before heading outdoors, the tree 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 Carol Stream allergy forecast for the tree pollen season: it shows whether Carol Stream 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 Carol Stream pollen count — all types, the overall index and today’s ranking context
Carol Stream grass pollen count
Carol Stream ragweed pollen count
See how Carol Stream ranks in today's pollen count rankings — the worst cities for allergies today
See Carol Stream 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).