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Troy, Montana

City in Lincoln County, Montana

Air quality

The air at Troy

Index 71, moderate, led by fine particles. Read at 11 PM from its reporting area, Libby (MT), 16 miles off.

71Moderate
  • Fine particles (PM2.5)71Moderate16.2 mi
  • Coarse particles (PM10)38Good16.2 mi

The days ahead

Yesterday measured 61, moderate.

Smoke, the next 43 hours

Smoke near the ground peaks at index 53, moderate, Sat 6 AM.

SatSun

Precipitation

What has fallen at Troy

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 Troy, the next 43 hours

Visibility stays 10 miles or more through Sun 6 PM.

SatSun

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

What is measuring near here

The 4 instruments nearest Troy, 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 now2 instruments

Troy RAWSTROM8

A remote fire weather station/1.2 mi away/2,897 ft/993 ft above here

temp, wind, gust, humidity, pressure

Rank99of 1,045

measured daily2 instruments

Troy 0.3 WSWMT-LN-9

In a volunteer observer's own ground/0.2 mi away/1,919 ft/15 ft above here

precip, snowfall, snow depth

Rank969of 1,045

TroyTRSM8

At a cooperative observer's station/1.5 mi away/1,994 ft/90 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Troy RAWS, drawn

The nearest instrument reporting now, 1.2 mi from Troy, Montana. From its report of Oct 17, 2026, 12:07 AM local time: 3 of its 5 sheets.

The air

34.0 F with a dew point of 32.4 F, 94 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up.

Chart of the air at Troy RAWS: temperature 34.0 degrees Fahrenheit and dew point 32.4, 94 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TROM8FIG. B THE AIR AT TROY RAWSTHE 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 400 FT ABOVE THE STATION, AT 32.1 FTEMPERATURE AND DEW POINT 34.0 F, 32.4 FRELATIVE HUMIDITY 94 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 POINTTITLETroy RAWS, the airSTATION REPORT · DCP TROM8TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-17IDSR-TROM8-1DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Troy RAWS, 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 TROM8FIG. C THE WIND AT TROY RAWSPLAN, 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 FORCE73TITLETroy RAWS, the windSTATION REPORT · DCP TROM8TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-17IDSR-TROM8-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 2,897 ft above sea level, 10 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 26.92 inHg and the temperature at 48.7 F; it reports 34.0 F, 14.7 F colder than standard.

Section from sea level of where Troy RAWS stands in the atmosphere, height to scale: the station 2,897 feet above sea level with 10 per cent of the air below it; the standard atmosphere's pressure there, 26.92 inches of mercury, and temperature, 48.7 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TROM8FIG. D WHERE TROY RAWS 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 ATMOSPHERETROY RAWS10 PER CENT OF THE AIR BELOW IT2,897 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 HERE26.92 inHgSTANDARD TEMPERATURE HERE48.7 FTEMPERATURE, REPORTED34.0 FTITLETroy RAWS, the columnSTATION REPORT · DCP TROM8TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-17IDSR-TROM8-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Troy RAWS, 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 Troy

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

Near Troy

River and lake gauges