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Onaka, South Dakota

Town in Faulk County, South Dakota

Air quality

The air at Onaka

Index 29, good, led by fine particles. Read at 11 PM from its reporting area, Aberdeen (SD), 51 miles off.

29Good
  • Fine particles (PM2.5)29Good-
  • Coarse particles (PM10)29Good-

The days ahead

Yesterday measured 18, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 7 PM.

SatSun

Precipitation

What has fallen at Onaka

None in the last 24 hours; 0.20 in over the last 3 days, to Fri 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.20in

Visibility

How far you can see at Onaka, the next 45 hours

Visibility stays 10 miles or more through Sun 7 PM.

SatSun

On the radar over Onaka, South DakotaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Onaka, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.2 miles away.

measured now4 instruments

SD RWIS TolstoySD068

Beside a road/7.2 mi away/1,949 ft/83 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

Gettysburg0D8

At an airfield/27.7 mi away/2,060 ft/194 ft above here

temp, wind, gust, visibility, precip, pressure

Rank453of 817

Aberdeen 35WNWABNS2

At a river or reservoir gauge/39.5 mi away/1,939 ft/73 ft above here

temp, wind, gust, humidity, pressure

Rank293of 817

measured daily2 instruments

Tolstoy 4.8 NNESD-ED-17

In a volunteer observer's own ground/8.3 mi away/1,882 ft/16 ft above here

precip, snowfall, snow depth

Rank-

RoscoeROSS2

At a cooperative observer's station/18.8 mi away/1,808 ft/58 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Gettysburg, drawn

The nearest airport reporting now, 27.7 mi from Onaka, South Dakota. From its report of Oct 16, 2026, 11:35 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 Gettysburg, 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 0D8FIG. A THE SKY OVER GETTYSBURGSECTION, 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 MORE0510TITLEGettysburg, the skySTATION REPORT · ASOS 0D8TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-0D8-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

37.4 F with a dew point of 30.2 F, 75 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up.

Chart of the air at Gettysburg: temperature 37.4 degrees Fahrenheit and dew point 30.2, 75 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 0D8FIG. B THE AIR AT GETTYSBURGTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00020 F30 F40 F50 FSATURATES 1,600 FT ABOVE THE STATION, AT 28.7 FTEMPERATURE 37.4 FDEW POINT 30.2 FSPREAD 7.2 FRELATIVE HUMIDITY 75 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 POINTTITLEGettysburg, the airSTATION REPORT · ASOS 0D8TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-0D8-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south (180 degrees) at 14 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 46 mph.

Plan of the wind at Gettysburg, north up: blowing from 180 degrees, the south, at 14 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 0D8FIG. C THE WIND AT GETTYSBURGPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 180°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEGettysburg, the windSTATION REPORT · ASOS 0D8TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-0D8-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in South Dakota

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

Near Onaka

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

Near Onaka

River and lake gauges