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St. Lawrence, South Dakota

Town in Hand County, South Dakota

Air quality

The air at St. Lawrence

Index 26, good, led by fine particles. Read at 3 AM from its reporting area, Pierre (SD), 67 miles off.

26Good
  • Fine particles (PM2.5)26Good-

The days ahead

Yesterday measured 27, good.

Smoke, the next 41 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at St. Lawrence

0.06 in in the last 24 hours, 0.19 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.06in
Last 3 days
0.19in

Visibility

How far you can see at St. Lawrence, the next 41 hours

Visibility stays 5 miles or more through Sat 7 PM, lowest 5 miles Fri 4 AM.

FriSat

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

What is measuring near here

The 5 instruments nearest St. Lawrence, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now3 instruments

Huron RAWSRHUS2

A remote fire weather station/20.8 mi away/1,900 ft/334 ft above here

temp, wind, gust, humidity, pressure

Rank133of 806

Redfield1D8

At an airfield/31.2 mi away/1,302 ft/264 ft below here

temp, wind, gust, visibility, precip, pressure

Rank4of 806

measured daily2 instruments

St. Lawrence 0.2 ESESD-HD-10

In a volunteer observer's own ground/0.2 mi away/1,575 ft/9 ft above here

precip, snowfall, snow depth

Rank-

MillerMLRS2

At a cooperative observer's station/2.0 mi away/1,588 ft/22 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Redfield, drawn

The nearest airport reporting now, 31.2 mi from St. Lawrence, South Dakota. From its report of Oct 16, 2026, 3:30 AM local time: 3 of its 6 sheets.

The sky

Broken at 2,700 ft, broken at 3,300 ft, broken at 5,500 ft; the ceiling is 2,700 ft; visibility 10 mi or more.

Section of the sky over Redfield, height above the station to scale: broken cloud with its base at 2,700 feet, broken cloud with its base at 3,300 feet, broken cloud with its base at 5,500 feet, the ceiling at 2,700 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1D8FIG. A THE SKY OVER REDFIELDSECTION, 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 STATION02,5005,0007,50010,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETBKN 5,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 3,300 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 2,700 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,700 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLERedfield, the skySTATION REPORT · ASOS 1D8TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-1D8-1DRAWN 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 39.2 F, 87 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 2,700 ft.

Chart of the air at Redfield: temperature 42.8 degrees Fahrenheit and dew point 39.2, 87 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station, against the lowest cloud reported at 2,700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1D8FIG. B THE AIR AT REDFIELDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00030 F40 F50 FSATURATES 800 FT ABOVE THE STATION, AT 38.4 FLOWEST CLOUD REPORTED, BKN 2,700 FTTEMPERATURE 42.8 FDEW POINT 39.2 FSPREAD 3.6 FRELATIVE HUMIDITY 87 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 POINTTITLERedfield, the airSTATION REPORT · ASOS 1D8TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-1D8-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 23 mph, gusting 39 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 44 mph.

Plan of the wind at Redfield, north up: blowing from 340 degrees, the north northwest, at 23 miles an hour, gusting 39; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1D8FIG. C THE WIND AT REDFIELDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 23 MPH6STRONG BREEZE257NEAR GALE328GALE39GUST, 39 MPH9STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLERedfield, the windSTATION REPORT · ASOS 1D8TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-1D8-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Redfield, 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 St. Lawrence

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

Near St. Lawrence

River and lake gauges