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West Whittier-Los Nietos, California

Community in Los Angeles County, California

Air quality

The air at West Whittier-Los Nietos

Index 37, good, led by nitrogen dioxide. Read at 10 PM from its reporting area, S San Gabriel Vly (CA), 2 miles off.

37Good
  • Fine particles (PM2.5)-9.5 mi
  • Ozone29Good5 ppb2.1 mi
  • Coarse particles (PM10)-10.8 mi
  • Nitrogen dioxide37Good39.9 ppb2.1 mi
  • Sulfur dioxide0Good0.5 ppb10.8 mi
  • Carbon monoxide-0.9 ppm9.5 mi

The days ahead

Highest 56, moderate, Fri Oct 16, led by fine particles. Yesterday measured 47, good.

Smoke, the next 44 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 17 or under.

FriSat

Precipitation

What has fallen at West Whittier-Los Nietos

None in the last 3 days, to Thu 9 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 West Whittier-Los Nietos, the next 44 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

On the radar over West Whittier-Los Nietos, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest West Whittier-Los Nietos, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.7 miles away.

measured now4 instruments

El MonteEMT

At an airfield/7.8 mi away/295 ft/135 ft above here

temp, wind, gust, visibility, precip, pressure

Rank4,211of 4,465

measured daily2 instruments

Pasadena - San Gabriel FireJBLC1

At a cooperative observer's station/9.2 mi away/468 ft/308 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Whittier Hills- RAWS #5195, drawn

The nearest instrument reporting now, 3.4 mi from West Whittier-Los Nietos, California. From its report of Oct 15, 2026, 9:57 PM local time: 3 of its 5 sheets.

The air

80.0 F with a dew point of 34.0 F, 19 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 10,400 ft up.

Chart of the air at Whittier Hills- RAWS #5195: temperature 80.0 degrees Fahrenheit and dew point 34.0, 19 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 10,400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT WTHC1FIG. B THE AIR AT WHITTIER HILLS- RAWS #5195THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00012,00010 F30 F50 F70 F90 FSATURATES 10,400 FT ABOVE THE STATION, AT 24.7 FTEMPERATURE 80.0 FDEW POINT 34.0 FSPREAD 46.0 FRELATIVE HUMIDITY 19 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 POINTTITLEWhittier Hills- RAWS #5195, the airSTATION REPORT · DCP WTHC1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-WTHC1-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (71 degrees) at 6 mph, gusting 13 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 26 mph.

Plan of the wind at Whittier Hills- RAWS #5195, north up: blowing from 71 degrees, the east northeast, at 6 miles an hour, gusting 13; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT WTHC1FIG. C THE WIND AT WHITTIER HILLS- RAWS #5195PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 71°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE13GUST, 13 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWhittier Hills- RAWS #5195, the windSTATION REPORT · DCP WTHC1TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-WTHC1-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 850 ft above sea level, 3 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.01 inHg and the temperature at 56.0 F; it reports 80.0 F, 24.0 F warmer than standard.

Section from sea level of where Whittier Hills- RAWS #5195 stands in the atmosphere, height to scale: the station 850 feet above sea level with 3 per cent of the air below it; the standard atmosphere's pressure there, 29.01 inches of mercury, and temperature, 56.0 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT WTHC1FIG. D WHERE WHITTIER HILLS- RAWS #5195 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 ATMOSPHEREWHITTIER HILLS- RAWS #51953 PER CENT OF THE AIR BELOW IT850 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 HERE29.01 inHgSTANDARD TEMPERATURE HERE56.0 FTEMPERATURE, REPORTED80.0 FTITLEWhittier Hills- RAWS #5195, the columnSTATION REPORT · DCP WTHC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-WTHC1-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Whittier Hills- RAWS #5195, in 5 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 West Whittier-Los Nietos

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

Near West Whittier-Los Nietos

River and lake gauges