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Diablo Grande, California

Community in Stanislaus County, California

Air quality

The air at Diablo Grande

Index 88, moderate, led by coarse particles. Read at 11 PM from its reporting area, Modesto (CA), 23 miles off.

88Moderate
  • Fine particles (PM2.5)74Moderate-
  • Ozone18Good-
  • Coarse particles (PM10)88Moderate-

The days ahead

Moderate each day through Fri Oct 16, led by coarse particles. Yesterday measured 64, moderate.

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 Diablo Grande

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 Diablo Grande, the next 43 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 7 instruments nearest Diablo Grande, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.3 miles away.

measured now5 instruments

TracyTCY

At an airfield/22.3 mi away/185 ft/841 ft below here

temp, wind, gust, visibility, precip, pressure

Rank2,674of 4,465

measured daily2 instruments

NewmanNMNC1

At a cooperative observer's station/15.7 mi away/104 ft/922 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Tracy, drawn

The nearest airport reporting now, 22.3 mi from Diablo Grande, California. From its report of Oct 15, 2026, 10:55 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 Tracy, 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 TCYFIG. A THE SKY OVER TRACYSECTION, 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 MORE0510TITLETracy, the skySTATION REPORT · ASOS TCYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-TCY-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

69.8 F with a dew point of 32.0 F, 25 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 8,500 ft up.

Chart of the air at Tracy: temperature 69.8 degrees Fahrenheit and dew point 32.0, 25 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 8,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TCYFIG. B THE AIR AT TRACYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00010 F30 F50 F70 FSATURATES 8,500 FT ABOVE THE STATION, AT 24.3 FTEMPERATURE 69.8 FDEW POINT 32.0 FSPREAD 37.8 FRELATIVE HUMIDITY 25 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 POINTTITLETracy, the airSTATION REPORT · ASOS TCYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-TCY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Tracy, 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 TCYFIG. C THE WIND AT TRACYPLAN, 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 FORCE73TITLETracy, the windSTATION REPORT · ASOS TCYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-TCY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Tracy, 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 Diablo Grande

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

Near Diablo Grande

River and lake gauges