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Yosemite Valley, California

Community in Mariposa County, California

Air quality

The air at Yosemite Valley

Index 44, good, led by ozone. Read at 7 PM from its reporting area, Yosemite National Park (CA), 7 miles off.

44Good
  • Fine particles (PM2.5)12Good-
  • Ozone44Good-

The days ahead

Yesterday measured 60, moderate.

Smoke, the next 41 hours

No smoke near the ground through Sat 11 AM.

ThuFriSat

Precipitation

What has fallen at Yosemite Valley

None in the last 3 days, to Thu 6 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 Yosemite Valley, the next 41 hours

Visibility stays 10 miles or more through Sat 11 AM.

ThuFriSat

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

What is measuring near here

The 6 instruments nearest Yosemite Valley, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now4 instruments

RancheriaS2236

At a soil climate station/34.2 mi away/7,200 ft/3,181 ft above here

temp, humidity, soil temp, soil moisture

Rank2,672of 4,465

measured daily2 instruments

Yosemite Park HeadquartersYPQC1

At a cooperative observer's station/0.3 mi away/4,029 ft/10 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Yosemite At Yosemite Valley, drawn

The nearest instrument reporting now, 0.7 mi from Yosemite Valley, California. From its report of Oct 15, 2026, 7:15 PM local time: 3 of its 4 sheets.

The air

60.5 F with a dew point of 34.1 F, 37 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 6,000 ft up.

Chart of the air at Yosemite At Yosemite Valley: temperature 60.5 degrees Fahrenheit and dew point 34.1, 37 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 6,000 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT YYVC1FIG. B THE AIR AT YOSEMITE AT YOSEMITE VALLEYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,0008,00020 F30 F40 F50 F60 F70 FSATURATES 6,000 FT ABOVE THE STATION, AT 28.6 FTEMPERATURE 60.5 FDEW POINT 34.1 FSPREAD 26.4 FRELATIVE HUMIDITY 37 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 POINTTITLEYosemite At Yosemite Valley, the airSTATION REPORT · DCP YYVC1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-YYVC1-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The column

At 4,088 ft above sea level, 14 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 25.76 inHg and the temperature at 44.4 F; it reports 60.5 F, 16.1 F warmer than standard.

Section from sea level of where Yosemite At Yosemite Valley stands in the atmosphere, height to scale: the station 4,088 feet above sea level with 14 per cent of the air below it; the standard atmosphere's pressure there, 25.76 inches of mercury, and temperature, 44.4 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT YYVC1FIG. D WHERE YOSEMITE AT YOSEMITE VALLEY 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 ATMOSPHEREYOSEMITE AT YOSEMITE VALLEY14 PER CENT OF THE AIR BELOW IT4,088 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 HERE25.76 inHgSTANDARD TEMPERATURE HERE44.4 FTEMPERATURE, REPORTED60.5 FTITLEYosemite At Yosemite Valley, the columnSTATION REPORT · DCP YYVC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-YYVC1-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 43 degrees above the horizon at 37.74 N, and the day is 11 h 03 min long. Level ground there takes 68 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Yosemite At Yosemite Valley, angles true: on Oct 16 it stands 43 degrees above the horizon, against 76 at the June solstice, 52 at the equinoxes and 29 at the December solstice; the day is 11 h 03 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT YYVC1FIG. E THE SUN AT YOSEMITE AT YOSEMITE VALLEYELEVATION 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 76°EQUINOXES 52°DECEMBER SOLSTICE 29°OCT 16, 43°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 03 MINLEVEL GROUND TAKES 68 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 37.74 N; THE SUN'S DECLINATION -9.1°TITLEYosemite At Yosemite Valley, the sunSTATION REPORT · DCP YYVC1TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-YYVC1-3DRAWN AS linework on paperSOURCES FB-ENG-007

The full report of Yosemite At Yosemite Valley, 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 Yosemite Valley

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

Near Yosemite Valley

River and lake gauges