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Fort Thompson, South Dakota

Community in Buffalo County, South Dakota

Air quality

The air at Fort Thompson

Index 21, good, led by fine particles. Read at 10 PM from its reporting area, Pierre (SD), 47 miles off.

21Good
  • Fine particles (PM2.5)21Good-

The days ahead

Yesterday measured 37, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Fort Thompson

0.15 in in the last 24 hours, and none in the 2 days before, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.15in
Last 3 days
0.15in

Visibility

How far you can see at Fort Thompson, the next 46 hours

Visibility stays 10 miles or more through Sat 7 PM.

FriSat

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

What is measuring near here

The 5 instruments nearest Fort Thompson, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.4 miles away.

measured now3 instruments

Chamberlain9V9

At an airfield/21.8 mi away/1,672 ft/231 ft above here

temp, wind, gust, visibility, precip, pressure

Rank117of 806

measured daily2 instruments

Fort Thompson 6.0 NSD-BF-3

In a volunteer observer's own ground/4.9 mi away/1,613 ft/172 ft above here

precip, snowfall, snow depth

Rank-

Gann Valley 3NNEGNVS2

At a cooperative observer's station/23.1 mi away/1,647 ft/206 ft above here

snowfall, snow depth, precip, high, low

Rank440of 806

Station report

The weather at Chamberlain, drawn

The nearest airport reporting now, 21.8 mi from Fort Thompson, South Dakota. From its report of Oct 15, 2026, 10:15 PM local time: 3 of its 6 sheets.

The sky

Overcast at 3,200 ft; the ceiling is 3,200 ft; visibility 10 mi or more.

Section of the sky over Chamberlain, height above the station to scale: overcast cloud with its base at 3,200 feet, the ceiling at 3,200 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 9V9FIG. A THE SKY OVER CHAMBERLAINSECTION, 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 3,200 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 3,200 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEChamberlain, the skySTATION REPORT · ASOS 9V9TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-9V9-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

45.7 F with a dew point of 35.0 F, 66 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,400 ft up; the lowest cloud reported is at 3,200 ft.

Chart of the air at Chamberlain: temperature 45.7 degrees Fahrenheit and dew point 35.0, 66 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,400 feet above the station, against the lowest cloud reported at 3,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 9V9FIG. B THE AIR AT CHAMBERLAINTHE 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 2,400 FT ABOVE THE STATION, AT 32.7 FLOWEST CLOUD REPORTED, OVC 3,200 FTTEMPERATURE 45.7 FDEW POINT 35.0 FSPREAD 10.7 FRELATIVE HUMIDITY 66 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 POINTTITLEChamberlain, the airSTATION REPORT · ASOS 9V9TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-9V9-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (320 degrees) at 29 mph, gusting 37 mph: force 6, a strong breeze on the Beaufort scale. The strongest gust today was 41 mph.

Plan of the wind at Chamberlain, north up: blowing from 320 degrees, the northwest, at 29 miles an hour, gusting 37; beside it the Beaufort scale from calm to hurricane force, force 6, strong breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 9V9FIG. C THE WIND AT CHAMBERLAINPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 320°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE25NOW, 29 MPH7NEAR GALE32GUST, 37 MPH8GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEChamberlain, the windSTATION REPORT · ASOS 9V9TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-9V9-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Chamberlain, 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 Fort Thompson

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

Near Fort Thompson

River and lake gauges