Grass Pollen Count in Effingham, IL

Last updated Friday, November 6, 2026

This page shows the most recent reading available for Effingham — from Friday, November 6, 2026 (1 day ago) — not today's reading.

Pollen by type in Effingham

What is the grass pollen count in Effingham today?

The Effingham grass pollen index today is 2 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Effingham’s overall pollen count today is 21 (Low) across all types. See the full Effingham pollen count for the overall index and every type together.

Effingham is a city in Effingham County, Illinois. Its population is 12,258 (ACS 2023).

Effingham Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Friday, November 621Low
Saturday, November 721Low
Sunday, November 820Low
Monday, November 920Low
Tuesday, November 1020Low

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 Effingham’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Effingham’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 Effingham is 2 (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 Effingham now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Effingham. The type summary stands: grass pollen reads 2 (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.

Effingham allergies today

Effingham allergies today are set by the same reading as the Effingham pollen count today: the Total Pollen Index is 21 (Low), and the grass pollen index on this page is 2 (Low) of it. When people ask about Effingham allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Effingham.

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

Effingham tree pollen count

Effingham ragweed pollen count

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

See Effingham on the pollen map

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

Illinois allergy season guide

Grass pollen season

Find an allergist in Effingham, 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).