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St. Marie, Montana

Community in Valley County, Montana

Air quality

The air at St. Marie

Index 9, good, led by fine particles. Read at 4 AM from its reporting area, Malta (MT), 61 miles off.

9Good
  • Fine particles (PM2.5)9Good-

The days ahead

Yesterday measured 12, good.

Smoke, the next 45 hours

Little smoke near the ground through Sun 12 AM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at St. Marie

None in the last 3 days, to Fri 3 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 St. Marie, the next 45 hours

Visibility stays 9 miles or more through Sun 12 AM, lowest 9 miles Fri 6 AM.

FriSat

On the radar over St. Marie, MontanaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest St. Marie, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now4 instruments

measured daily2 instruments

Glasgow 14.6 NNEMT-VL-24

In a volunteer observer's own ground/0.2 mi away/2,762 ft/11 ft above here

precip, snowfall, snow depth

Rank-

St. MarieSMIM8

At a cooperative observer's station/1.6 mi away/2,736 ft/15 ft below here

snowfall, snow depth, precip, high, low

Rank980of 1,053

Station report

The weather at Glasgow INTL Arpt, drawn

The nearest airport reporting now, 13.5 mi from St. Marie, Montana. From its report of Oct 16, 2026, 3:53 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 Glasgow INTL Arpt, 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 GGWFIG. A THE SKY OVER GLASGOW INTL ARPTSECTION, 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 MORE0510TITLEGlasgow INTL Arpt, the skySTATION REPORT · ASOS GGWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-GGW-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

28.0 F with a dew point of 24.0 F, 85 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 900 ft up.

Chart of the air at Glasgow INTL Arpt: temperature 28.0 degrees Fahrenheit and dew point 24.0, 85 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GGWFIG. B THE AIR AT GLASGOW INTL ARPTTHE 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 F40 FSATURATES 900 FT ABOVE THE STATION, AT 23.1 FTEMPERATURE 28.0 FDEW POINT 24.0 FSPREAD 4.0 FRELATIVE HUMIDITY 85 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 POINTTITLEGlasgow INTL Arpt, the airSTATION REPORT · ASOS GGWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-GGW-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (110 degrees) at 12 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Glasgow INTL Arpt, north up: blowing from 110 degrees, the east southeast, at 12 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 GGWFIG. C THE WIND AT GLASGOW INTL ARPTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 110°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 12 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEGlasgow INTL Arpt, the windSTATION REPORT · ASOS GGWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-GGW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at St. Marie (SMIM8), 1.6 miles from here, read 14 Oct, 16:00. measured daily

Elsewhere in Montana

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

Near St. Marie

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

Near St. Marie

River and lake gauges