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Grant, Montana

Community in Beaverhead County, Montana

Air quality

The air at Grant

Index 15, good, led by fine particles. Read at 11 PM from its reporting area, Dillon (MT), 26 miles off.

15Good
  • Fine particles (PM2.5)15Good-

The days ahead

Yesterday measured 13, good.

Smoke, the next 43 hours

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

SatSun

Precipitation

What has fallen at Grant

None in the last 3 days, to Fri 11 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 Grant, the next 43 hours

Visibility stays 10 miles or more through Sun 6 PM.

SatSun

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

What is measuring near here

The 5 instruments nearest Grant, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.4 miles away.

measured now3 instruments

Brenner RAWSBRRM8

A remote fire weather station/7.4 mi away/6,371 ft/527 ft above here

temp, wind, gust, humidity, pressure

Rank88of 1,045

measured daily2 instruments

Bannack State ParkBSPM8

In a park or preserve/11.1 mi away/5,892 ft/48 ft above here

snowfall, snow depth, precip, high, low

Rank-

Dillon 18.1 WSWMT-BV-12

In a volunteer observer's own ground/11.5 mi away/5,845 ft/1 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Dillon Airport, drawn

The nearest airport reporting now, 30.8 mi from Grant, Montana. From its report of Oct 16, 2026, 11:53 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 Dillon Airport, 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 DLNFIG. A THE SKY OVER DILLON AIRPORTSECTION, 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 MORE0510TITLEDillon Airport, the skySTATION REPORT · ASOS DLNTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-DLN-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

42.0 F with a dew point of 29.0 F, 60 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,900 ft up.

Chart of the air at Dillon Airport: temperature 42.0 degrees Fahrenheit and dew point 29.0, 60 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DLNFIG. B THE AIR AT DILLON AIRPORTTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00020 F30 F40 F50 FSATURATES 2,900 FT ABOVE THE STATION, AT 26.3 FTEMPERATURE 42.0 FDEW POINT 29.0 FSPREAD 13.0 FRELATIVE HUMIDITY 60 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 POINTTITLEDillon Airport, the airSTATION REPORT · ASOS DLNTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-DLN-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (200 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 16 mph.

Plan of the wind at Dillon Airport, north up: blowing from 200 degrees, the south southwest, at 9 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DLNFIG. C THE WIND AT DILLON AIRPORTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 200°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDillon Airport, the windSTATION REPORT · ASOS DLNTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-DLN-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Dillon Airport, 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 Grant

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

Near Grant

River and lake gauges