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Riverdale Park, California

Community in Stanislaus County, California

Air quality

The air at Riverdale Park

Index 88, moderate, led by coarse particles. Read at 10 PM from its reporting area, Modesto (CA), 4 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 6 or under.

FriSat

Precipitation

What has fallen at Riverdale Park

None in the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
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Last 3 days
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Visibility

How far you can see at Riverdale Park, the next 43 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

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

What is measuring near here

The 7 instruments nearest Riverdale Park, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.8 miles away.

measured now5 instruments

measured daily2 instruments

ModestoMODC1

At a cooperative observer's station/3.5 mi away/88 ft/23 ft above here

snowfall, snow depth, precip, high, low

Rank130of 4,465

Station report

The weather at Modesto City/Sham, drawn

The nearest airport reporting now, 4.9 mi from Riverdale Park, 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 Modesto City/Sham, 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 MODFIG. A THE SKY OVER MODESTO CITY/SHAMSECTION, 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 MORE0510TITLEModesto City/Sham, the skySTATION REPORT · ASOS MODTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MOD-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

59.0 F with a dew point of 48.0 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 Modesto City/Sham: temperature 59.0 degrees Fahrenheit and dew point 48.0, 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 MODFIG. B THE AIR AT MODESTO CITY/SHAMTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00030 F40 F50 F60 F70 FSATURATES 2,500 FT ABOVE THE STATION, AT 45.5 FTEMPERATURE 59.0 FDEW POINT 48.0 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 POINTTITLEModesto City/Sham, the airSTATION REPORT · ASOS MODTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MOD-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (120 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Modesto City/Sham, north up: blowing from 120 degrees, the east southeast, at 5 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MODFIG. C THE WIND AT MODESTO CITY/SHAMPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 120°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEModesto City/Sham, the windSTATION REPORT · ASOS MODTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MOD-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Modesto City/Sham, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Measured at Modesto (MODC1), 3.5 miles from here, read 14 Oct, 23:59. measured daily

Elsewhere in California

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

Near Riverdale Park

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

Near Riverdale Park

River and lake gauges