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Alturas, California

City in Modoc County, California

Air quality

The air at Alturas

Index 14, good, led by fine particles. Read at 10 PM from its reporting area, Lakeview (OR), 49 miles off.

14Good
  • Fine particles (PM2.5)14Good-

The days ahead

Yesterday measured 36, good.

Smoke, the next 43 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 Alturas

None in the last 3 days, to Fri 10 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 Alturas, the next 43 hours

Visibility stays 10 miles or more through Sun 5 PM.

SatSun

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

What is measuring near here

The 6 instruments nearest Alturas, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.0 miles away.

measured now4 instruments

Ash ValleyS2214

At a soil climate station/30.9 mi away/5,097 ft/729 ft above here

temp, humidity, soil temp, soil moisture

Rank2,477of 4,461

PerezCD021

Beside a road/35.2 mi away/4,482 ft/114 ft above here

temp, pavement temp, wind, visibility, precip

Rank1,433of 4,461

measured daily2 instruments

CedarvilleCEDC1

At a cooperative observer's station/19.5 mi away/4,652 ft/284 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Alturas (Was O00), drawn

The nearest airport reporting now, 1.0 mi from Alturas, California. From its report of Oct 16, 2026, 10:55 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 Alturas (Was O00), 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 AATFIG. A THE SKY OVER ALTURAS (WAS O00)SECTION, 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 MORE0510TITLEAlturas (Was O00), the skySTATION REPORT · ASOS AATTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-AAT-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

42.0 F with a dew point of 18.0 F, 38 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 5,400 ft up.

Chart of the air at Alturas (Was O00): temperature 42.0 degrees Fahrenheit and dew point 18.0, 38 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 5,400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AATFIG. B THE AIR AT ALTURAS (WAS O00)THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,0000 F10 F20 F30 F40 F50 FSATURATES 5,400 FT ABOVE THE STATION, AT 13.2 FTEMPERATURE 42.0 FDEW POINT 18.0 FSPREAD 24.0 FRELATIVE HUMIDITY 38 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 POINTTITLEAlturas (Was O00), the airSTATION REPORT · ASOS AATTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-AAT-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Alturas (Was O00), 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 AATFIG. C THE WIND AT ALTURAS (WAS O00)PLAN, 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 FORCE73TITLEAlturas (Was O00), the windSTATION REPORT · ASOS AATTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-AAT-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Alturas (Was O00), in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Cedarville (CEDC1), 19.5 miles from here, read 16 Oct, 08:30. measured daily

Elsewhere in California

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

Near Alturas

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

Near Alturas

River and lake gauges