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Twain, California

Community in Plumas County, California

Air quality

The air at Twain

Index 39, good, led by fine particles. Read at 12 AM from its reporting area, Quincy (CA), 9 miles off.

39Good
  • Fine particles (PM2.5)39Good-

The days ahead

Yesterday measured 23, good.

Smoke, the next 41 hours

No smoke near the ground through Sat 5 PM.

FriSat

Precipitation

What has fallen at Twain

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 Twain, the next 41 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Twain, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 6.0 miles away.

measured now4 instruments

Caribou PHCBIC1

At a river or reservoir gauge/6.0 mi away/3,560 ft/759 ft above here

temp, wind, gust, humidity, pressure

Rank2,699of 4,465

ChesterO05

At an airfield/20.6 mi away/4,534 ft/1,733 ft above here

temp, wind, gust, visibility, precip, pressure

Rank1,645of 4,465

measured daily2 instruments

QuincyQCYC1

At a cooperative observer's station/8.8 mi away/3,432 ft/631 ft above here

snowfall, snow depth, precip, high, low

Rank116of 4,465

Station report

The weather at Caribou PH, drawn

The nearest instrument reporting now, 6.0 mi from Twain, California. From its report of Oct 15, 2026, 11:45 PM local time: 3 of its 4 sheets.

The air

57.1 F with a dew point of 32.4 F, 39 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 5,600 ft up.

Chart of the air at Caribou PH: temperature 57.1 degrees Fahrenheit and dew point 32.4, 39 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 5,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CBIC1FIG. B THE AIR AT CARIBOU PHTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,00020 F30 F40 F50 F60 F70 FSATURATES 5,600 FT ABOVE THE STATION, AT 27.2 FTEMPERATURE 57.1 FDEW POINT 32.4 FSPREAD 24.7 FRELATIVE HUMIDITY 39 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 POINTTITLECaribou PH, the airSTATION REPORT · DCP CBIC1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-CBIC1-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The column

At 3,560 ft above sea level, 12 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 26.27 inHg and the temperature at 46.3 F; it reports 57.1 F, 10.8 F warmer than standard.

Section from sea level of where Caribou PH stands in the atmosphere, height to scale: the station 3,560 feet above sea level with 12 per cent of the air below it; the standard atmosphere's pressure there, 26.27 inches of mercury, and temperature, 46.3 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CBIC1FIG. D WHERE CARIBOU PH 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 ATMOSPHERECARIBOU PH12 PER CENT OF THE AIR BELOW IT3,560 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 HERE26.27 inHgSTANDARD TEMPERATURE HERE46.3 FTEMPERATURE, REPORTED57.1 FTITLECaribou PH, the columnSTATION REPORT · DCP CBIC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-CBIC1-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 41 degrees above the horizon at 40.08 N, and the day is 10 h 58 min long. Level ground there takes 65 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Caribou PH, angles true: on Oct 16 it stands 41 degrees above the horizon, against 73 at the June solstice, 50 at the equinoxes and 26 at the December solstice; the day is 10 h 58 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CBIC1FIG. E THE SUN AT CARIBOU PHELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 73°EQUINOXES 50°DECEMBER SOLSTICE 26°OCT 16, 41°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 58 MINLEVEL GROUND TAKES 65 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 40.08 N; THE SUN'S DECLINATION -9.1°TITLECaribou PH, the sunSTATION REPORT · DCP CBIC1TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-CBIC1-3DRAWN AS linework on paperSOURCES FB-ENG-007

The full report of Caribou PH, in 4 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in California

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

Near Twain

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

Near Twain

River and lake gauges