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Green Valley, California

Community in Los Angeles County, California

Air quality

The air at Green Valley

Index 27, good, led by ozone. Read at 3 AM from its reporting area, Antelope Vly (CA), 16 miles off.

27Good
  • Fine particles (PM2.5)13Good17.7 mi
  • Ozone27Good41 ppb17.7 mi
  • Coarse particles (PM10)7Good-
  • Nitrogen dioxide1Good1.4 ppb17.7 mi

The days ahead

Moderate each day through Today, led by fine particles. Yesterday measured 20, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 11 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Green Valley

None in the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
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Visibility

How far you can see at Green Valley, the next 45 hours

Visibility stays 10 miles or more through Sat 11 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Green Valley, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.6 miles away.

measured now4 instruments

measured daily2 instruments

Lancaster 3.7 SWCA-LA-151

In a volunteer observer's own ground/11.1 mi away/2,480 ft/488 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Lancaster/Fox Field, drawn

The nearest airport reporting now, 13.7 mi from Green Valley, California. From its report of Oct 16, 2026, 2:56 AM 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 Lancaster/Fox Field, 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 WJFFIG. A THE SKY OVER LANCASTER/FOX FIELDSECTION, 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 MORE0510TITLELancaster/Fox Field, the skySTATION REPORT · ASOS WJFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-WJF-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

61.0 F with a dew point of 35.0 F, 38 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 5,900 ft up.

Chart of the air at Lancaster/Fox Field: temperature 61.0 degrees Fahrenheit and dew point 35.0, 38 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 5,900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT WJFFIG. B THE AIR AT LANCASTER/FOX FIELDTHE 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 5,900 FT ABOVE THE STATION, AT 29.5 FTEMPERATURE 61.0 FDEW POINT 35.0 FSPREAD 26.0 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 POINTTITLELancaster/Fox Field, the airSTATION REPORT · ASOS WJFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-WJF-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east (100 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Lancaster/Fox Field, north up: blowing from 100 degrees, the east, 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 WJFFIG. C THE WIND AT LANCASTER/FOX FIELDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 100°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELancaster/Fox Field, the windSTATION REPORT · ASOS WJFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-WJF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Measured at Saugus Power Plant #1 (SGSC1), 3.3 miles from here, read 14 Oct, 14:30. measured daily

Elsewhere in California

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

Near Green Valley

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

Near Green Valley

River and lake gauges