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Sylvanite, Montana

Community in Lincoln County, Montana

Air quality

The air at Sylvanite

Index 25, good, led by fine particles. Read at 4 AM from its reporting area, Kootenai Tribe (ID), 23 miles off.

25Good
  • Fine particles (PM2.5)25Good23.2 mi

The days ahead

Yesterday measured 22, good.

Smoke, the next 44 hours

Little smoke near the ground through Mon 12 AM: the index from smoke stays at 50 or under.

SatSun

Precipitation

What has fallen at Sylvanite

None in the last 3 days, to Sat 4 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 Sylvanite, the next 44 hours

Visibility stays 10 miles or more through Mon 12 AM.

SatSun

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

What is measuring near here

The 4 instruments nearest Sylvanite, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.9 miles away.

measured now2 instruments

measured daily2 instruments

Troy 17.0 NMT-LN-10

In a volunteer observer's own ground/0.9 mi away/2,691 ft/9 ft above here

precip, snowfall, snow depth

Rank-

TroyTRSM8

At a cooperative observer's station/15.0 mi away/1,994 ft/688 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Yaak Hill US-2 MP 4.8, drawn

The nearest instrument reporting now, 9.6 mi from Sylvanite, Montana. From its report of Oct 17, 2026, 5:00 AM local time: 3 of its 5 sheets.

The air

33.0 F with a dew point of 29.0 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 Yaak Hill US-2 MP 4.8: temperature 33.0 degrees Fahrenheit and dew point 29.0, 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 MTYAKFIG. B THE AIR AT YAAK HILL US-2 MP 4.8THE 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 FSATURATES 900 FT ABOVE THE STATION, AT 28.1 FTEMPERATURE 33.0 FDEW POINT 29.0 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 POINTTITLEYaak Hill US-2 MP 4.8, the airSTATION REPORT · RWIS MTYAKTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-17IDSR-MTYAK-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (113 degrees) at 1 mph, gusting 3 mph: force 1, a light air on the Beaufort scale. The strongest gust today was 3 mph.

Plan of the wind at Yaak Hill US-2 MP 4.8, north up: blowing from 113 degrees, the east southeast, at 1 miles an hour, gusting 3; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTYAKFIG. C THE WIND AT YAAK HILL US-2 MP 4.8PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 113°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 1 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEYaak Hill US-2 MP 4.8, the windSTATION REPORT · RWIS MTYAKTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-17IDSR-MTYAK-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 2,280 ft above sea level, 8 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 27.54 inHg and the temperature at 50.9 F; it reports 33.0 F, 17.9 F colder than standard.

Section from sea level of where Yaak Hill US-2 MP 4.8 stands in the atmosphere, height to scale: the station 2,280 feet above sea level with 8 per cent of the air below it; the standard atmosphere's pressure there, 27.54 inches of mercury, and temperature, 50.9 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTYAKFIG. D WHERE YAAK HILL US-2 MP 4.8 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 ATMOSPHEREYAAK HILL US-2 MP 4.88 PER CENT OF THE AIR BELOW IT2,280 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 HERE27.54 inHgSTANDARD TEMPERATURE HERE50.9 FTEMPERATURE, REPORTED33.0 FTITLEYaak Hill US-2 MP 4.8, the columnSTATION REPORT · RWIS MTYAKTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-17IDSR-MTYAK-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Yaak Hill US-2 MP 4.8, in 5 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 Sylvanite

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

Near Sylvanite

River and lake gauges