Tree Pollen Count in Blue Island, IL — Today

Updated Saturday, November 7, 2026

Pollen by type in Blue Island

What is the tree pollen count in Blue Island today?

The Blue Island 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.

Blue Island’s overall pollen count today is 32 (Low) across all types. See the full Blue Island pollen count for the overall index and every type together.

Blue Island is a city in Cook County, Illinois. Its population is 23,416 (ACS 2023).

Blue Island Tree Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 732Low
Sunday, November 831Low
Monday, November 931Low
Tuesday, November 1031Low
Wednesday, November 1131Low

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 Blue Island’s overall trend across the week. Today’s tree pollen reading is the headline above.

Species driving Blue Island’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 Blue Island now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Blue Island. 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.

Blue Island allergies today

Blue Island allergies today are set by the same reading as the Blue Island 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 Blue Island allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Blue Island.

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

Blue Island grass pollen count

Blue Island ragweed pollen count

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

See Blue Island on the pollen map

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

Illinois allergy season guide

Tree pollen season

Find an allergist in Blue Island, IL

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).