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Plains, Montana

Town in Sanders County, Montana

Air quality

The air at Plains

Index 11, good, led by fine particles. Read at 3 AM from its reporting area, Thompson Falls (MT), 22 miles off.

11Good
  • Fine particles (PM2.5)11Good-
  • Coarse particles (PM10)6Good-

The days ahead

Yesterday measured 34, good.

Smoke, the next 46 hours

Smoke near the ground peaks at index 55, moderate, Sat 4 AM.

FriSat

Precipitation

What has fallen at Plains

None in the last 3 days, to Fri 2 AM. 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 Plains, the next 46 hours

Visibility stays 10 miles or more through Sun 12 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Plains, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now4 instruments

Plans 1NPNSM8

At a river or reservoir gauge/0.6 mi away/2,526 ft/58 ft above here

temp, wind, gust, humidity, pressure

Rank401of 1,053

PlainsS34

At an airfield/1.4 mi away/2,454 ft/14 ft below here

temp, wind, gust, visibility, precip, pressure

Rank499of 1,053

measured daily2 instruments

Plains 5.2 NMT-SN-5

In a volunteer observer's own ground/5.3 mi away/2,894 ft/426 ft above here

precip, snowfall, snow depth

Rank695of 1,053

Station report

The weather at Plains, drawn

The nearest airport reporting now, 1.4 mi from Plains, Montana. From its report of Oct 16, 2026, 3:30 AM 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 Plains, 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 S34FIG. A THE SKY OVER PLAINSSECTION, 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 MORE0510TITLEPlains, the skySTATION REPORT · ASOS S34TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-S34-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

30.2 F with a dew point of 30.2 F, 100 per cent relative humidity. The air is saturated at the ground.

Chart of the air at Plains: temperature 30.2 degrees Fahrenheit and dew point 30.2, 100 per cent relative humidity; the air saturated at the ground; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT S34FIG. B THE AIR AT PLAINSTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00020 F30 F40 FSATURATED AT THE GROUNDTEMPERATURE AND DEW POINT 30.2 F, 30.2 FRELATIVE HUMIDITY 100 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 POINTTITLEPlains, the airSTATION REPORT · ASOS S34TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-S34-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Plains, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT S34FIG. C THE WIND AT PLAINSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPlains, the windSTATION REPORT · ASOS S34TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-S34-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Plains, 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 Plains

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

Near Plains

River and lake gauges