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Stevenson Ranch, California

Community in Los Angeles County, California

Air quality

The air at Stevenson Ranch

Index 38, good, led by ozone. Read at 1 AM from its reporting area, Santa Clarita Vly (CA), 4 miles off.

38Good
  • Fine particles (PM2.5)6Good3.5 mi
  • Ozone38Good42 ppb3.5 mi
  • Coarse particles (PM10)-9.5 mi
  • Nitrogen dioxide1Good1.4 ppb3.5 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 14, good.

Smoke, the next 41 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Stevenson Ranch

None in the last 3 days, to Fri 12 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 Stevenson Ranch, the next 41 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 5 instruments nearest Stevenson Ranch, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.9 miles away.

measured now3 instruments

Santa ClaritaSAUC1

At a river or reservoir gauge/4.5 mi away/1,391 ft/218 ft below here

temp, wind, gust, humidity, pressure

Rank40of 4,465

measured daily2 instruments

Santa Clarita 3.1 WSWCA-LA-67

In a volunteer observer's own ground/1.9 mi away/1,251 ft/358 ft below here

precip, snowfall, snow depth

Rank-

Piru 2 ESEPRUC1

At a cooperative observer's station/9.6 mi away/737 ft/872 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Santa Clarita, drawn

The nearest instrument reporting now, 4.5 mi from Stevenson Ranch, California. From its report of Oct 16, 2026, 12:57 AM local time: 3 of its 5 sheets.

The air

79.0 F with a dew point of 31.9 F, 18 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 10,600 ft up.

Chart of the air at Santa Clarita: temperature 79.0 degrees Fahrenheit and dew point 31.9, 18 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 10,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SAUC1FIG. B THE AIR AT SANTA CLARITATHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00012,00014,00010 F30 F50 F70 F90 FSATURATES 10,600 FT ABOVE THE STATION, AT 22.4 FTEMPERATURE 79.0 FDEW POINT 31.9 FSPREAD 47.1 FRELATIVE HUMIDITY 18 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 POINTTITLESanta Clarita, the airSTATION REPORT · DCP SAUC1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-SAUC1-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northeast (21 degrees) at 20 mph, gusting 39 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 39 mph.

Plan of the wind at Santa Clarita, north up: blowing from 21 degrees, the north northeast, at 20 miles an hour, gusting 39; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SAUC1FIG. C THE WIND AT SANTA CLARITAPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 21°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 20 MPH6STRONG BREEZE257NEAR GALE328GALE39GUST, 39 MPH9STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESanta Clarita, the windSTATION REPORT · DCP SAUC1TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-SAUC1-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 1,391 ft above sea level, 5 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.45 inHg and the temperature at 54.0 F; it reports 79.0 F, 25.0 F warmer than standard.

Section from sea level of where Santa Clarita stands in the atmosphere, height to scale: the station 1,391 feet above sea level with 5 per cent of the air below it; the standard atmosphere's pressure there, 28.45 inches of mercury, and temperature, 54.0 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SAUC1FIG. D WHERE SANTA CLARITA 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 ATMOSPHERESANTA CLARITA5 PER CENT OF THE AIR BELOW IT1,391 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 HERE28.45 inHgSTANDARD TEMPERATURE HERE54.0 FTEMPERATURE, REPORTED79.0 FTITLESanta Clarita, the columnSTATION REPORT · DCP SAUC1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-SAUC1-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Santa Clarita, 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 Stevenson Ranch

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

Near Stevenson Ranch

River and lake gauges