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Selby, South Dakota

City in Walworth County, South Dakota

Air quality

The air at Selby

Index 29, good, led by fine particles. Read at 11 PM from its reporting area, Aberdeen (SD), 74 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 Selby

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

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

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

Visibility stays 10 miles or more through Sun 7 PM.

SatSun

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

What is measuring near here

The 5 instruments nearest Selby, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now3 instruments

MobridgeMBG

At an airfield/18.5 mi away/1,690 ft/213 ft below here

temp, wind, gust, visibility, precip, pressure

Rank451of 817

measured daily2 instruments

Mobridge-20MI.ESBYS2

At a cooperative observer's station/0.5 mi away/1,864 ft/39 ft below here

snowfall, snow depth, precip, high, low

Rank-

Java 1.9 SESD-WL-10

In a volunteer observer's own ground/8.7 mi away/2,156 ft/253 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Mobridge, drawn

The nearest airport reporting now, 18.5 mi from Selby, South Dakota. From its report of Oct 16, 2026, 10:52 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 Mobridge, 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 MBGFIG. A THE SKY OVER MOBRIDGESECTION, 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 MORE0510TITLEMobridge, the skySTATION REPORT · ASOS MBGTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-MBG-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

45.0 F with a dew point of 33.0 F, 63 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,700 ft up.

Chart of the air at Mobridge: temperature 45.0 degrees Fahrenheit and dew point 33.0, 63 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MBGFIG. B THE AIR AT MOBRIDGETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00020 F30 F40 F50 F60 FSATURATES 2,700 FT ABOVE THE STATION, AT 30.4 FTEMPERATURE 45.0 FDEW POINT 33.0 FSPREAD 12.0 FRELATIVE HUMIDITY 63 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 POINTTITLEMobridge, the airSTATION REPORT · ASOS MBGTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-MBG-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (160 degrees) at 13 mph, gusting 26 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 46 mph.

Plan of the wind at Mobridge, north up: blowing from 160 degrees, the south southeast, at 13 miles an hour, gusting 26; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MBGFIG. C THE WIND AT MOBRIDGEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 160°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 26 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMobridge, the windSTATION REPORT · ASOS MBGTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-MBG-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Mobridge, 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 Selby

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

Near Selby

River and lake gauges