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Floriston, California

Community in Nevada County, California

Air quality

The air at Floriston

Index 30, good, led by fine particles. Read at 9 PM from its reporting area, Truckee (CA), 9 miles off.

30Good
  • Fine particles (PM2.5)30Good9.8 mi
  • Ozone-30 ppb16.9 mi

The days ahead

Yesterday measured 16, good.

Smoke, the next 45 hours

Little smoke near the ground through Sun 5 PM: the index from smoke stays at 6 or under.

SatSun

Precipitation

What has fallen at Floriston

None in the last 3 days, to Fri 8 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 Floriston, the next 45 hours

Visibility stays 10 miles or more through Sun 5 PM.

SatSun

On the radar over Floriston, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Floriston, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.

measured now4 instruments

measured daily2 instruments

Floriston 0.0 NCA-NV-54

In a volunteer observer's own ground/0.1 mi away/5,396 ft/11 ft above here

precip, snowfall, snow depth

Rank-

BocaBOCC1

At a cooperative observer's station/3.9 mi away/5,600 ft/215 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Truckee-Tahoe, drawn

The nearest airport reporting now, 8.1 mi from Floriston, California. From its report of Oct 16, 2026, 9:15 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 Truckee-Tahoe, 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 TRKFIG. A THE SKY OVER TRUCKEE-TAHOESECTION, 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 MORE0510TITLETruckee-Tahoe, the skySTATION REPORT · ASOS TRKTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-TRK-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

42.8 F with a dew point of 21.2 F, 42 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,900 ft up.

Chart of the air at Truckee-Tahoe: temperature 42.8 degrees Fahrenheit and dew point 21.2, 42 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TRKFIG. B THE AIR AT TRUCKEE-TAHOETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,00010 F20 F30 F40 F50 FSATURATES 4,900 FT ABOVE THE STATION, AT 16.8 FTEMPERATURE 42.8 FDEW POINT 21.2 FSPREAD 21.6 FRELATIVE HUMIDITY 42 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 POINTTITLETruckee-Tahoe, the airSTATION REPORT · ASOS TRKTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-TRK-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Truckee-Tahoe, 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 TRKFIG. C THE WIND AT TRUCKEE-TAHOEPLAN, 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 FORCE73TITLETruckee-Tahoe, the windSTATION REPORT · ASOS TRKTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-TRK-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Boca (BOCC1), 3.9 miles from here, read 11 Oct, 07:15. measured daily

Elsewhere in California

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

Near Floriston

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

Near Floriston

River and lake gauges