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Thornton, California

Community in San Joaquin County, California

Air quality

The air at Thornton

Index 58, moderate, led by coarse particles. Read at 10 PM from its reporting area, Elk Grove (CA), 13 miles off.

58Moderate
  • Fine particles (PM2.5)51Moderate5 mi
  • Ozone39Good38 ppb5 mi
  • Coarse particles (PM10)58Moderate5 mi
  • Nitrogen dioxide3Good3 ppb5 mi
  • Sulfur dioxide1Good1.5 ppb19.6 mi
  • Carbon monoxide-0.4 ppm19.6 mi

The days ahead

Highest 58, moderate, today, led by ozone. Yesterday measured 40, good.

Smoke, the next 43 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 Thornton

None in the last 3 days, to Thu 10 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 Thornton, the next 43 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Thornton, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.2 miles away.

measured now4 instruments

CF132CF132

Beside a road/7.3 mi away/6 ft/8 ft below here

temp, pavement temp, wind, visibility, precip

Rank3,455of 4,465

measured daily2 instruments

Galt 2.3 SWCA-SA-97

In a volunteer observer's own ground/5.2 mi away/42 ft/28 ft above here

precip, snowfall, snow depth

Rank-

Acampo 5NEACPC1

At a cooperative observer's station/12.0 mi away/83 ft/69 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Sacramento/Executiv, drawn

The nearest airport reporting now, 19.8 mi from Thornton, California. From its report of Oct 15, 2026, 10:53 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 Sacramento/Executiv, 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 SACFIG. A THE SKY OVER SACRAMENTO/EXECUTIVSECTION, 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 MORE0510TITLESacramento/Executiv, the skySTATION REPORT · ASOS SACTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SAC-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

61.0 F with a dew point of 47.0 F, 60 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,200 ft up.

Chart of the air at Sacramento/Executiv: temperature 61.0 degrees Fahrenheit and dew point 47.0, 60 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,200 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SACFIG. B THE AIR AT SACRAMENTO/EXECUTIVTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00030 F40 F50 F60 F70 FSATURATES 3,200 FT ABOVE THE STATION, AT 43.9 FTEMPERATURE 61.0 FDEW POINT 47.0 FSPREAD 14.0 FRELATIVE HUMIDITY 60 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 POINTTITLESacramento/Executiv, the airSTATION REPORT · ASOS SACTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SAC-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Sacramento/Executiv, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SACFIG. C THE WIND AT SACRAMENTO/EXECUTIVPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESacramento/Executiv, the windSTATION REPORT · ASOS SACTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SAC-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Sacramento/Executiv, 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 Thornton

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

Near Thornton

River and lake gauges