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Big Stone City, South Dakota

City in Grant County, South Dakota

Air quality

The air at Big Stone City

Index 29, good, led by fine particles. Read at 11 PM from its reporting area, Watertown (SD), 42 miles off.

29Good
  • Fine particles (PM2.5)29Good-
  • Ozone18Good-
  • Coarse particles (PM10)19Good-

The days ahead

Yesterday measured 21, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Big Stone City

0.07 in in the last 24 hours, and none in the 2 days before, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.07in
Last 3 days
0.07in

Visibility

How far you can see at Big Stone City, the next 44 hours

Visibility stays 7 miles or more through Sat 7 PM, lowest 8 miles Fri 12 AM.

FriSat

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

What is measuring near here

The 5 instruments nearest Big Stone City, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.8 miles away.

measured now3 instruments

Milbank1D1

At an airfield/6.7 mi away/1,122 ft/85 ft above here

temp, wind, gust, visibility, precip, pressure

Rank165of 806

Marvin 9SWMVNS2

At a river or reservoir gauge/30.7 mi away/1,924 ft/887 ft above here

temp, wind, gust, humidity, pressure

Rank-

measured daily2 instruments

Big Stone CityBSTS2

At a cooperative observer's station/1.8 mi away/1,106 ft/69 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Milbank, drawn

The nearest airport reporting now, 6.7 mi from Big Stone City, South Dakota. From its report of Oct 15, 2026, 11:55 PM local time: 3 of its 6 sheets.

The sky

Scattered at 1,200 ft, broken at 1,600 ft, overcast at 3,100 ft; the ceiling is 1,600 ft; visibility 6 mi.

Section of the sky over Milbank, height above the station to scale: scattered cloud with its base at 1,200 feet, broken cloud with its base at 1,600 feet, overcast cloud with its base at 3,100 feet, the ceiling at 1,600 feet, and visibility of 6 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1D1FIG. A THE SKY OVER MILBANKSECTION, 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 STATION01,0002,0003,0004,0005,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 3,100 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 1,600 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 1,200 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 1,600 FTVISIBILITY, MILES: 6 MI0510TITLEMilbank, the skySTATION REPORT · ASOS 1D1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-1D1-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

44.6 F with a dew point of 44.6 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 1,200 ft.

Chart of the air at Milbank: temperature 44.6 degrees Fahrenheit and dew point 44.6, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 1,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1D1FIG. B THE AIR AT MILBANKTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 F60 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, SCT 1,200 FTTEMPERATURE AND DEW POINT 44.6 F, 44.6 FRELATIVE HUMIDITY 100 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 POINTTITLEMilbank, the airSTATION REPORT · ASOS 1D1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-1D1-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (310 degrees) at 24 mph, gusting 31 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 45 mph.

Plan of the wind at Milbank, north up: blowing from 310 degrees, the northwest, at 24 miles an hour, gusting 31; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1D1FIG. C THE WIND AT MILBANKPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 24 MPH6STRONG BREEZE25GUST, 31 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMilbank, the windSTATION REPORT · ASOS 1D1TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-1D1-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Milbank, 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 Big Stone City

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

Near Big Stone City

River and lake gauges