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Libby, Montana

City in Lincoln County, Montana

Air quality

The air at Libby

Index 61, moderate, led by fine particles. Read at 10 PM from its reporting area, Libby (MT), 0 miles off.

61Moderate
  • Fine particles (PM2.5)61Moderate0.4 mi
  • Coarse particles (PM10)43Good0.4 mi

The days ahead

Yesterday measured 47, good.

Smoke, the next 44 hours

Little smoke near the ground through Sat 6 PM: the index from smoke stays at 39 or under.

FriSat

Precipitation

What has fallen at Libby

None in the last 3 days, to Thu 9 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 Libby, the next 44 hours

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

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

What is measuring near here

The 4 instruments nearest Libby, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now2 instruments

LibbyLBMM8

At a river or reservoir gauge/0.4 mi away/2,139 ft/33 ft above here

temp, wind, gust, humidity, pressure

Rank600of 1,053

measured daily2 instruments

Libby1 NE RsLBYM8

At a cooperative observer's station/1.4 mi away/2,156 ft/50 ft above here

snowfall, snow depth, precip, high, low

Rank-

Libby 2.3 NNEMT-LN-5

In a volunteer observer's own ground/2.4 mi away/2,316 ft/210 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Bull Lake MT-56 MP 20.5, drawn

The nearest instrument reporting now, 16.2 mi from Libby, Montana. From its report of Oct 15, 2026, 10:15 PM local time: 3 of its 5 sheets.

The air

39.0 F with a dew point of 37.1 F, 93 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 Bull Lake MT-56 MP 20.5: temperature 39.0 degrees Fahrenheit and dew point 37.1, 93 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 MTBKEFIG. B THE AIR AT BULL LAKE MT-56 MP 20.5THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 FSATURATES 400 FT ABOVE THE STATION, AT 36.7 FTEMPERATURE AND DEW POINT 39.0 F, 37.1 FRELATIVE HUMIDITY 93 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 POINTTITLEBull Lake MT-56 MP 20.5, the airSTATION REPORT · RWIS MTBKETYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-MTBKE-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 Bull Lake MT-56 MP 20.5, 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 MTBKEFIG. C THE WIND AT BULL LAKE MT-56 MP 20.5PLAN, 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 FORCE73TITLEBull Lake MT-56 MP 20.5, the windSTATION REPORT · RWIS MTBKETYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-MTBKE-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 2,339 ft above sea level, 8 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 27.48 inHg and the temperature at 50.7 F; it reports 39.0 F, 11.7 F colder than standard.

Section from sea level of where Bull Lake MT-56 MP 20.5 stands in the atmosphere, height to scale: the station 2,339 feet above sea level with 8 per cent of the air below it; the standard atmosphere's pressure there, 27.48 inches of mercury, and temperature, 50.7 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTBKEFIG. D WHERE BULL LAKE MT-56 MP 20.5 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 ATMOSPHEREBULL LAKE MT-56 MP 20.58 PER CENT OF THE AIR BELOW IT2,339 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 HERE27.48 inHgSTANDARD TEMPERATURE HERE50.7 FTEMPERATURE, REPORTED39.0 FTITLEBull Lake MT-56 MP 20.5, the columnSTATION REPORT · RWIS MTBKETYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-MTBKE-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Bull Lake MT-56 MP 20.5, 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 Libby

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

Near Libby

River and lake gauges