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White Sulphur Springs, Montana

City in Meagher County, Montana

Air quality

The air at White Sulphur Springs

Index 29, good, led by fine particles. Read at 11 PM from its reporting area, Helena (MT), 54 miles off.

29Good
  • Fine particles (PM2.5)29Good-

The days ahead

Yesterday measured 34, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 6 PM.

FriSat

Precipitation

What has fallen at White Sulphur Springs

None in the last 3 days, to Thu 10 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 White Sulphur Springs, the next 44 hours

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

On the radar over White Sulphur Springs, MontanaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest White Sulphur Springs, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now3 instruments

measured daily2 instruments

Millegan 14SEMGZM8

At a cooperative observer's station/25.9 mi away/4,977 ft/77 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at White Sulphur Springs, drawn

The nearest instrument reporting now, 0.3 mi from White Sulphur Springs, Montana. From its report of Oct 15, 2026, 10:54 PM local time: 3 of its 4 sheets.

The air

20.5 F with a dew point of 20.0 F, 98 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 100 ft up.

Chart of the air at White Sulphur Springs: temperature 20.5 degrees Fahrenheit and dew point 20.0, 98 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 100 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT WSSM8FIG. B THE AIR AT WHITE SULPHUR SPRINGSTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00010 F20 F30 FSATURATES 100 FT ABOVE THE STATION, AT 19.8 FTEMPERATURE AND DEW POINT 20.5 F, 20.0 FRELATIVE HUMIDITY 98 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 POINTTITLEWhite Sulphur Springs, the airSTATION REPORT · DCP WSSM8TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-WSSM8-1DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The column

At 5,066 ft above sea level, 17 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 24.83 inHg and the temperature at 40.9 F; it reports 20.5 F, 20.5 F colder than standard.

Section from sea level of where White Sulphur Springs stands in the atmosphere, height to scale: the station 5,066 feet above sea level with 17 per cent of the air below it; the standard atmosphere's pressure there, 24.83 inches of mercury, and temperature, 40.9 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT WSSM8FIG. D WHERE WHITE SULPHUR SPRINGS STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHEREWHITE SULPHUR SPRINGS17 PER CENT OF THE AIR BELOW IT5,066 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE24.83 inHgSTANDARD TEMPERATURE HERE40.9 FTEMPERATURE, REPORTED20.5 FTITLEWhite Sulphur Springs, the columnSTATION REPORT · DCP WSSM8TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-WSSM8-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 34 degrees above the horizon at 46.54 N, and the day is 10 h 42 min long. Level ground there takes 56 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at White Sulphur Springs, angles true: on Oct 16 it stands 34 degrees above the horizon, against 67 at the June solstice, 43 at the equinoxes and 20 at the December solstice; the day is 10 h 42 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT WSSM8FIG. E THE SUN AT WHITE SULPHUR SPRINGSELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 67°EQUINOXES 43°DECEMBER SOLSTICE 20°OCT 16, 34°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 42 MINLEVEL GROUND TAKES 56 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 46.54 N; THE SUN'S DECLINATION -9.1°TITLEWhite Sulphur Springs, the sunSTATION REPORT · DCP WSSM8TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-WSSM8-3DRAWN AS linework on paperSOURCES FB-ENG-007

The full report of White Sulphur Springs, in 4 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 White Sulphur Springs

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

Near White Sulphur Springs

River and lake gauges