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South Whittier, California

Community in Los Angeles County, California

Air quality

The air at South Whittier

Index 2, good, led by ozone. Read at 5 AM from its reporting area, S San Gabriel Vly (CA), 6 miles off.

2Good
  • Fine particles (PM2.5)-8.6 mi
  • Ozone2Good36 ppb4.5 mi
  • Coarse particles (PM10)-8.6 mi
  • Nitrogen dioxide1Good1.9 ppb4.5 mi
  • Sulfur dioxide0Good0.2 ppb14.7 mi
  • Carbon monoxide-0.2 ppm10 mi

The days ahead

Moderate each day through Today, led by coarse particles. Yesterday measured 50, good.

Smoke, the next 42 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 South Whittier

None in the last 3 days, to Fri 4 AM. 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 South Whittier, the next 42 hours

Visibility stays 10 miles or more through Sat 11 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest South Whittier, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.7 miles away.

measured now4 instruments

measured daily2 instruments

AnaheimANAC1

At a cooperative observer's station/11.9 mi away/236 ft/70 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Fullerton Municipal, drawn

The nearest airport reporting now, 5.4 mi from South Whittier, California. From its report of Oct 16, 2026, 4:53 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 Fullerton Municipal, 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 FULFIG. A THE SKY OVER FULLERTON MUNICIPALSECTION, 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 MORE0510TITLEFullerton Municipal, the skySTATION REPORT · ASOS FULTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-FUL-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

82.0 F with a dew point of 39.0 F, 22 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 9,700 ft up.

Chart of the air at Fullerton Municipal: temperature 82.0 degrees Fahrenheit and dew point 39.0, 22 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 9,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FULFIG. B THE AIR AT FULLERTON MUNICIPALTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00012,00020 F40 F60 F80 FSATURATES 9,700 FT ABOVE THE STATION, AT 30.1 FTEMPERATURE 82.0 FDEW POINT 39.0 FSPREAD 43.0 FRELATIVE HUMIDITY 22 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 POINTTITLEFullerton Municipal, the airSTATION REPORT · ASOS FULTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-FUL-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (60 degrees) at 10 mph, gusting 22 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 44 mph.

Plan of the wind at Fullerton Municipal, north up: blowing from 60 degrees, the east northeast, at 10 miles an hour, gusting 22; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FULFIG. C THE WIND AT FULLERTON MUNICIPALPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 60°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE19GUST, 22 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEFullerton Municipal, the windSTATION REPORT · ASOS FULTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-FUL-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Fullerton Municipal, in 6 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 South Whittier

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

Near South Whittier

River and lake gauges