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Claremont Colony, South Dakota

Community in Hamlin County, South Dakota

Air quality

The air at Claremont Colony

Index 25, good, led by ozone. Read at 2 PM from its reporting area, Watertown (SD), 16 miles off.

25Good
  • Fine particles (PM2.5)10Good15.8 mi
  • Ozone25Good26 ppb15.8 mi
  • Coarse particles (PM10)5Good15.8 mi

The days ahead

Yesterday measured 28, good.

Smoke, the next 41 hours

No smoke near the ground through Sun 7 AM.

FriSatSun

Precipitation

What has fallen at Claremont Colony

None in the last 24 hours; 0.06 in over the last 3 days, to Fri 1 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.06in

Visibility

How far you can see at Claremont Colony, the next 41 hours

Visibility stays 10 miles or more through Sun 7 AM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Claremont Colony, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.2 miles away.

measured now4 instruments

WatertownATY

At an airfield/17.1 mi away/1,725 ft/76 ft below here

temp, wind, gust, visibility, precip, pressure

Rank123of 806

measured daily2 instruments

Castlewood 5.7 ESD-HM-11

In a volunteer observer's own ground/2.2 mi away/1,869 ft/68 ft above here

precip, snowfall, snow depth

Rank-

CastlewoodCLWS2

At a cooperative observer's station/4.1 mi away/1,704 ft/97 ft below here

snowfall, snow depth, precip, high, low

Rank18of 806

Station report

The weather at Watertown, drawn

The nearest airport reporting now, 17.1 mi from Claremont Colony, South Dakota. From its report of Oct 16, 2026, 2:53 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 Watertown, 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 ATYFIG. A THE SKY OVER WATERTOWNSECTION, 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 MORE0510TITLEWatertown, the skySTATION REPORT · ASOS ATYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-ATY-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

48.0 F with a dew point of 28.0 F, 46 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,500 ft up.

Chart of the air at Watertown: temperature 48.0 degrees Fahrenheit and dew point 28.0, 46 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ATYFIG. B THE AIR AT WATERTOWNTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00010 F20 F30 F40 F50 F60 FSATURATES 4,500 FT ABOVE THE STATION, AT 23.8 FTEMPERATURE 48.0 FDEW POINT 28.0 FSPREAD 20.0 FRELATIVE HUMIDITY 46 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 POINTTITLEWatertown, the airSTATION REPORT · ASOS ATYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-ATY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 49 mph.

Plan of the wind at Watertown, north up: blowing from 330 degrees, the north northwest, at 10 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ATYFIG. C THE WIND AT WATERTOWNPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWatertown, the windSTATION REPORT · ASOS ATYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-ATY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Watertown, 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 Claremont Colony

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

Near Claremont Colony

River and lake gauges