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Princeton, Idaho

Community in Latah County, Idaho

Air quality

The air at Princeton

Index 20, good, led by fine particles. Read at 11 PM from its reporting area, Moscow (ID), 14 miles off.

20Good
  • Fine particles (PM2.5)20Good14.3 mi

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 26, good.

Smoke, the next 42 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 44 or under.

FriSat

Precipitation

What has fallen at Princeton

None in the last 3 days, to Thu 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 Princeton, the next 42 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

On the radar over Princeton, IdahoReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Princeton, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.1 miles away.

measured now4 instruments

LewistonLWS

At an airfield/38.3 mi away/1,437 ft/1,082 ft below here

temp, wind, gust, visibility, precip, pressure

Rank4of 833

measured daily2 instruments

Princeton 1.3 WNWID-LT-11

In a volunteer observer's own ground/1.1 mi away/2,617 ft/98 ft above here

precip, snowfall, snow depth

Rank-

Potlatch 3NNEPTLI1

At a cooperative observer's station/3.2 mi away/2,772 ft/253 ft above here

snowfall, snow depth, precip, high, low

Rank146of 833

Station report

The weather at Lewiston, drawn

The nearest airport reporting now, 38.3 mi from Princeton, Idaho. From its report of Oct 15, 2026, 11:56 PM 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 Lewiston, 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 LWSFIG. A THE SKY OVER LEWISTONSECTION, 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 MORE0510TITLELewiston, the skySTATION REPORT · ASOS LWSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-LWS-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

49.0 F with a dew point of 36.0 F, 61 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,000 ft up.

Chart of the air at Lewiston: temperature 49.0 degrees Fahrenheit and dew point 36.0, 61 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,000 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LWSFIG. B THE AIR AT LEWISTONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00020 F30 F40 F50 F60 FSATURATES 3,000 FT ABOVE THE STATION, AT 33.2 FTEMPERATURE 49.0 FDEW POINT 36.0 FSPREAD 13.0 FRELATIVE HUMIDITY 61 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 POINTTITLELewiston, the airSTATION REPORT · ASOS LWSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-LWS-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southeast (130 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Lewiston, north up: blowing from 130 degrees, the southeast, at 9 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 LWSFIG. C THE WIND AT LEWISTONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 130°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELewiston, the windSTATION REPORT · ASOS LWSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-LWS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Idaho

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

Near Princeton

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

Near Princeton

River and lake gauges