Storm Station
Sign in

Big Sandy, Montana

Town in Chouteau County, Montana

Air quality

The air at Big Sandy

Index 16, good, led by fine particles. Read at 5 PM from its reporting area, Havre (MT), 33 miles off.

16Good
  • Fine particles (PM2.5)16Good-

The days ahead

Yesterday measured 3, good.

Smoke, the next 43 hours

Little smoke near the ground through Sun 12 PM: the index from smoke stays at 11 or under.

FriSatSun

Precipitation

What has fallen at Big Sandy

None in the last 3 days, to Fri 5 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 Sandy, the next 43 hours

Visibility stays 10 miles or more through Sun 12 PM.

FriSatSun

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

What is measuring near here

The 7 instruments nearest Big Sandy, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 16.1 miles away.

measured now5 instruments

HavreHVR

At an airfield/29.9 mi away/2,598 ft/106 ft below here

temp, wind, gust, visibility, precip, pressure

Rank16of 1,045

measured daily2 instruments

Rudyard 19SRYDM8

At a cooperative observer's station/23.4 mi away/2,864 ft/160 ft above here

snowfall, snow depth, precip, high, low

Rank-

Loma 0.1 SEMT-CH-7

In a volunteer observer's own ground/24.5 mi away/2,579 ft/125 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Havre, drawn

The nearest airport reporting now, 29.9 mi from Big Sandy, Montana. From its report of Oct 16, 2026, 5:53 PM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Havre, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HVRFIG. A THE SKY OVER HAVRESECTION, 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 STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEHavre, the skySTATION REPORT · ASOS HVRTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-HVR-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

67.0 F with a dew point of 34.0 F, 29 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 7,500 ft up.

Chart of the air at Havre: temperature 67.0 degrees Fahrenheit and dew point 34.0, 29 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 7,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HVRFIG. B THE AIR AT HAVRETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00020 F30 F40 F50 F60 F70 F80 FSATURATES 7,500 FT ABOVE THE STATION, AT 27.1 FTEMPERATURE 67.0 FDEW POINT 34.0 FSPREAD 33.0 FRELATIVE HUMIDITY 29 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 POINTTITLEHavre, the airSTATION REPORT · ASOS HVRTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-HVR-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (210 degrees) at 13 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 33 mph.

Plan of the wind at Havre, north up: blowing from 210 degrees, the south southwest, 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 HVRFIG. C THE WIND AT HAVREPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 210°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEHavre, the windSTATION REPORT · ASOS HVRTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-HVR-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-

Snow on the ground

Elsewhere in Montana

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

Near Big Sandy

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

Near Big Sandy

River and lake gauges