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Erwin, South Dakota

Town in Kingsbury County, South Dakota

Air quality

The air at Erwin

Index 18, good, led by fine particles. Read at 4 AM from its reporting area, Watertown (SD), 32 miles off.

18Good
  • Fine particles (PM2.5)18Good-
  • Ozone17Good-
  • Coarse particles (PM10)7Good-

The days ahead

Yesterday measured 28, good.

Smoke, the next 46 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Erwin

0.05 in in the last 24 hours, 0.12 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.05in
Last 3 days
0.12in

Visibility

How far you can see at Erwin, the next 46 hours

Visibility stays 10 miles or more through Sun 1 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Erwin, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 6.8 miles away.

measured now4 instruments

Desmet6E5

At an airfield/6.8 mi away/1,726 ft/147 ft below here

temp, wind, gust, visibility, precip, pressure

Rank105of 806

measured daily2 instruments

Lake Preston 10.5 NNESD-KY-6

In a volunteer observer's own ground/7.6 mi away/1,797 ft/76 ft below here

precip, snowfall, snow depth

Rank-

Brookings-38MI.NwBRYS2

At a cooperative observer's station/7.9 mi away/1,847 ft/26 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Desmet, drawn

The nearest airport reporting now, 6.8 mi from Erwin, South Dakota. From its report of Oct 16, 2026, 4:15 AM local time: 3 of its 6 sheets.

The sky

Broken at 2,000 ft, overcast at 2,500 ft; the ceiling is 2,000 ft; visibility 10 mi or more.

Section of the sky over Desmet, height above the station to scale: broken cloud with its base at 2,000 feet, overcast cloud with its base at 2,500 feet, the ceiling at 2,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 6E5FIG. A THE SKY OVER DESMETSECTION, 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 STATION05001,0001,5002,0002,5003,0003,5004,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 2,500 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEDesmet, the skySTATION REPORT · ASOS 6E5TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-6E5-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

42.8 F with a dew point of 42.8 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 2,000 ft.

Chart of the air at Desmet: temperature 42.8 degrees Fahrenheit and dew point 42.8, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 2,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 6E5FIG. B THE AIR AT DESMETTHE 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 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, BKN 2,000 FTTEMPERATURE AND DEW POINT 42.8 F, 42.8 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 POINTTITLEDesmet, the airSTATION REPORT · ASOS 6E5TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-6E5-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 25 mph, gusting 32 mph: force 6, a strong breeze on the Beaufort scale. The strongest gust today was 43 mph.

Plan of the wind at Desmet, north up: blowing from 330 degrees, the north northwest, at 25 miles an hour, gusting 32; beside it the Beaufort scale from calm to hurricane force, force 6, strong breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 6E5FIG. C THE WIND AT DESMETPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE25NOW, 25 MPH7NEAR GALE32GUST, 32 MPH8GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDesmet, the windSTATION REPORT · ASOS 6E5TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-6E5-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Desmet, 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 Erwin

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

Near Erwin

River and lake gauges