Grass Pollen Count in Heart Butte, MT — Today

Updated Saturday, November 7, 2026

Pollen by type in Heart Butte

What is the grass pollen count in Heart Butte today?

The Heart Butte grass pollen index today is 8 (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 Heart Butte today. See the full Heart Butte pollen count for the overall index and every type together.

Heart Butte Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 76Low
Sunday, November 86Low
Monday, November 98Low
Tuesday, November 106Low
Wednesday, November 116Low

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

Species driving Heart Butte’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 Heart Butte is 8 (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 Heart Butte now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Heart Butte. The type summary stands: grass pollen reads 8 (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.

Heart Butte allergies today

Heart Butte allergies today are set by the same reading as the Heart Butte pollen count today: the Total Pollen Index is 6 (Low), and the grass pollen index on this page is 8 (Low) of it. When people ask about Heart Butte allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Heart Butte.

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

Heart Butte tree pollen count

Heart Butte ragweed pollen count

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

See Heart Butte on the pollen map

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

Montana allergy season guide

Grass pollen season

Find an allergist in Heart Butte, MT

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).