Storm Station
Sign in

Aptos Hills-Larkin Valley, California

Community in Santa Cruz County, California

Air quality

The air at Aptos Hills-Larkin Valley

Index 38, good, led by ozone. Read at 9 PM from its reporting area, Santa Cruz (CA), 9 miles off.

38Good
  • Fine particles (PM2.5)24Good8.3 mi
  • Ozone38Good30 ppb8.3 mi
  • Nitrogen dioxide8Good9 ppb21.9 mi
  • Carbon monoxide-0.1 ppm21.9 mi

The days ahead

Highest 52, moderate, today, led by ozone. Yesterday measured 32, good.

Smoke, the next 44 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 Aptos Hills-Larkin Valley

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 Aptos Hills-Larkin Valley, the next 44 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

On the radar over Aptos Hills-Larkin Valley, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Aptos Hills-Larkin Valley, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.8 miles away.

measured now4 instruments

measured daily2 instruments

Watsonville 4.4 NWCA-SZ-57

In a volunteer observer's own ground/0.8 mi away/399 ft/61 ft above here

precip, snowfall, snow depth

Rank-

Watsonville WaterworksWVIC1

At a cooperative observer's station/4.3 mi away/102 ft/236 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Watsonville, drawn

The nearest airport reporting now, 3.0 mi from Aptos Hills-Larkin Valley, California. From its report of Oct 15, 2026, 9:53 PM 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 Watsonville, 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 WVIFIG. A THE SKY OVER WATSONVILLESECTION, 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 MORE0510TITLEWatsonville, the skySTATION REPORT · ASOS WVITYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-WVI-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

61.0 F with a dew point of 50.0 F, 67 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,500 ft up.

Chart of the air at Watsonville: temperature 61.0 degrees Fahrenheit and dew point 50.0, 67 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT WVIFIG. B THE AIR AT WATSONVILLETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00040 F50 F60 F70 FSATURATES 2,500 FT ABOVE THE STATION, AT 47.5 FTEMPERATURE 61.0 FDEW POINT 50.0 FSPREAD 11.0 FRELATIVE HUMIDITY 67 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 POINTTITLEWatsonville, the airSTATION REPORT · ASOS WVITYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-WVI-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Watsonville, north up: blowing from 330 degrees, the north northwest, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT WVIFIG. C THE WIND AT WATSONVILLEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWatsonville, the windSTATION REPORT · ASOS WVITYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-WVI-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-

Snow on the ground

Elsewhere in California

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

Near Aptos Hills-Larkin Valley

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

Near Aptos Hills-Larkin Valley

River and lake gauges