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Big Stone Colony, Montana

Community in Cascade County, Montana

Air quality

The air at Big Stone Colony

Index 3, good, led by fine particles. Read at 10 PM from its reporting area, Choteau (MT), 54 miles off.

3Good
  • Fine particles (PM2.5)3Good-

The days ahead

Yesterday measured 18, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 6 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Big Stone Colony

None in the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Big Stone Colony, the next 45 hours

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

On the radar over Big Stone Colony, MontanaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Big Stone Colony, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.2 miles away.

measured now4 instruments

measured daily2 instruments

Great Falls 6.2 SMT-CC-16

In a volunteer observer's own ground/4.2 mi away/3,323 ft/452 ft below here

precip, snowfall, snow depth

Rank-

Sand Coulee 3ESESANM8

At a cooperative observer's station/5.2 mi away/3,867 ft/92 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Malmstrom AFB, drawn

The nearest airport reporting now, 7.3 mi from Big Stone Colony, Montana. From its report of Oct 15, 2026, 9:55 PM local time: 3 of its 6 sheets.

The sky

A few clouds at 22,000 ft; visibility 10 mi or more.

Section of the sky over Malmstrom AFB, height above the station to scale: a few clouds cloud with its base at 22,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GFAFIG. A THE SKY OVER MALMSTROM AFBSECTION, HEIGHT ABOVE THE STATION TO SCALE, EACH LAYER AT THE HEIGHT OF ITS BASE AS REPORTED; COVER IN EIGHTHS OF THE SKY; TOPS NOT MEASUREDFT ABOVE THE STATION05,00010,00015,00020,00025,00030,00035,000ETAGESLOWMIDDLEHIGHTHE STATIONFEW 22,000 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLEMalmstrom AFB, the skySTATION REPORT · ASOS GFATYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-GFA-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014, FB-SKY-010, FB-SKY-011, FB-SKY-012

The air

41.0 F with a dew point of 30.7 F, 66 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,300 ft up; the lowest cloud reported is at 22,000 ft.

Chart of the air at Malmstrom AFB: temperature 41.0 degrees Fahrenheit and dew point 30.7, 66 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,300 feet above the station, against the lowest cloud reported at 22,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GFAFIG. B THE AIR AT MALMSTROM AFBTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00020 F30 F40 F50 FSATURATES 2,300 FT ABOVE THE STATION, AT 28.5 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, FEW 22,000 FTTEMPERATURE 41.0 FDEW POINT 30.7 FSPREAD 10.3 FRELATIVE HUMIDITY 66 PER CENTTHE AIR COOLS ABOUT 5.4 F EACH 1,000 FT IT RISES, AND ITS DEW POINT ABOUT 1 FSOLID: THE LIFTED AIR'S TEMPERATURE; DASHED: ITS DEW POINTTITLEMalmstrom AFB, the airSTATION REPORT · ASOS GFATYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-GFA-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (150 degrees) at 13 mph: force 4, a moderate breeze on the Beaufort scale.

Plan of the wind at Malmstrom AFB, north up: blowing from 150 degrees, the south southeast, at 13 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GFAFIG. C THE WIND AT MALMSTROM AFBPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 150°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMalmstrom AFB, the windSTATION REPORT · ASOS GFATYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-GFA-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Malmstrom AFB, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Montana

20 places, each with its own forecast and its own instruments.

Near Big Stone Colony

The nearest places, each with its own forecast and the instruments nearest it.

Near Big Stone Colony

River and lake gauges