Grass Pollen Count in St. Mary, MT — Today

Pollen by type in St. Mary

• St. Mary tree pollen count
• St. Mary ragweed pollen count
• St. Mary pollen count

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

The St. Mary grass pollen index today is 31 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Grass pollen is the dominant allergen in St. Mary today. See the full St. Mary pollen count for the overall index and every type together.

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

Species driving St. Mary’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. Mary is 31 (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 Northern Rockies pattern, the plants that typically shape this city’s year are river-corridor trees, a June grass crest of timothy, orchard grass, bluegrass and ryegrass, and a late sagebrush finish.

The Montana allergy season guide singles out sagebrush, flowering late on the dry benches, over a grass summer of timothy, orchard grass, bluegrass and ryegrass.

Plants affecting St. Mary now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for St. Mary. The type summary stands: grass pollen reads 31 (Low) today.

In the Northern Rockies pattern, the plants that typically shape this city’s year are river-corridor trees, a June grass crest of timothy, orchard grass, bluegrass and ryegrass, and a late sagebrush finish — 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 run from May through July with a June crest, when the hay grasses flower together. This month sits outside the usual grass pollen window for the Northern Rockies pattern, so today’s grass pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The Montana allergy season guide singles out sagebrush, flowering late on the dry benches, over a grass summer of timothy, orchard grass, bluegrass and ryegrass.

St. Mary allergies today

St. Mary allergies today are set by the same reading as the St. Mary pollen count today: the Total Pollen Index is 24 (Low), and the grass pollen index on this page is 31 (Low) of it. When people ask about St. Mary allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for St. Mary.

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