Grass Pollen Count in St. Peters, MO — Today

Pollen by type in St. Peters

• St. Peters tree pollen count
• St. Peters ragweed pollen count
• St. Peters pollen count

What is the grass pollen count in St. Peters today?

The St. Peters grass pollen index today is 3 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

St. Peters’s overall pollen count today is 20 (Low) across all types. See the full St. Peters pollen count for the overall index and every type together.

St. Peters is a city in St. Charles County, Missouri. Its population is 58,200 (ACS 2023).

St. Peters Grass Pollen Count: 5-Day Forecast

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

Species driving St. Peters’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 St. Peters is 3 (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 St. Peters now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for St. Peters. The type summary stands: grass pollen reads 3 (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.

St. Peters allergies today

St. Peters allergies today are set by the same reading as the St. Peters pollen count today: the Total Pollen Index is 20 (Low), and the grass pollen index on this page is 3 (Low) of it. When people ask about St. Peters allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for St. Peters.

Allergies in St. Peters follow the Missouri calendar set out on the full St. Peters 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 St. Peters 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 St. Peters allergy forecast for the grass pollen season: it shows whether St. Peters 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.