Grass Pollen Count in Webster Groves, MO — Today
Updated Saturday, November 7, 2026
This reading is the forecast point shared with University City, MO — 7 nearby places use the same point; Webster Groves is 9.4 km from it.
Pollen by type in Webster Groves
What is the grass pollen count in Webster Groves today?
The Webster Groves grass pollen index today is 2 (Low) on Pollen Atlas’s modelled 0–100 scale. Low
Modelled pollen risk index — not a measured count.
Webster Groves’s overall pollen count today is 18 (Low) across all types. See the full Webster Groves pollen count for the overall index and every type together.
Webster Groves is a city in St. Louis County, Missouri. Its population is 23,771 (ACS 2023).
Webster Groves Grass Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Saturday, November 7 | 18 | Low |
| Sunday, November 8 | 19 | Low |
| Monday, November 9 | 19 | Low |
| Tuesday, November 10 | 19 | Low |
| Wednesday, November 11 | 19 | 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 Webster Groves’s overall trend across the week. Today’s grass pollen reading is the headline above.
Species driving Webster Groves’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 Webster Groves 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 South-Central Plains pattern, the plants that typically shape this city’s year are spring trees, prairie grasses and late-summer ragweed.
The Missouri allergy season guide singles out oak and hickory over an elm and maple opening, in a season written by the state’s rivers.
Plants affecting Webster Groves now — grass pollen
Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Webster Groves. The type summary stands: grass pollen reads 2 (Low) today.
In the South-Central Plains pattern, the plants that typically shape this city’s year are spring trees, prairie grasses and late-summer 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.
Prairie grasses take over in late May and hold the summer. This month sits outside the usual grass pollen window for the South-Central Plains pattern, so today’s grass pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The Missouri allergy season guide singles out oak and hickory over an elm and maple opening, in a season written by the state’s rivers.
Webster Groves allergies today
Webster Groves allergies today are set by the same reading as the Webster Groves pollen count today: the Total Pollen Index is 18 (Low), and the grass pollen index on this page is 2 (Low) of it. When people ask about Webster Groves allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Webster Groves.
Allergies in Webster Groves follow the Missouri calendar set out on the full Webster Groves 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 Webster Groves 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 Webster Groves allergy forecast for the grass pollen season: it shows whether Webster Groves 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 Webster Groves pollen count — all types, the overall index and today’s ranking context
Webster Groves tree pollen count
Webster Groves ragweed pollen count
See how Webster Groves ranks in today's pollen count rankings — the worst cities for allergies today
See Webster Groves 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).