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Hayti, South Dakota

Town in Hamlin County, South Dakota

Air quality

The air at Hayti

Index 24, good, led by ozone. Read at 7 PM from its reporting area, Watertown (SD), 17 miles off.

24Good
  • Fine particles (PM2.5)9Good-
  • Ozone24Good-
  • Coarse particles (PM10)11Good-

The days ahead

Yesterday measured 28, good.

Smoke, the next 42 hours

No smoke near the ground through Sun 1 PM.

FriSatSun

Precipitation

What has fallen at Hayti

None in the last 24 hours; 0.11 in over the last 3 days, to Fri 7 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.11in

Visibility

How far you can see at Hayti, the next 42 hours

Visibility stays 10 miles or more through Sun 1 PM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Hayti, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.

measured now4 instruments

WatertownATY

At an airfield/17.9 mi away/1,725 ft/30 ft above here

temp, wind, gust, visibility, precip, pressure

Rank114of 817

measured daily2 instruments

Hayti 0.1 WNWSD-HM-1

In a volunteer observer's own ground/0.1 mi away/1,687 ft/8 ft below here

precip, snowfall, snow depth

Rank-

Hayti 1WHYTS2

At a cooperative observer's station/1.2 mi away/1,680 ft/15 ft below here

snowfall, snow depth, precip, high, low

Rank667of 817

Station report

The weather at Watertown, drawn

The nearest airport reporting now, 17.9 mi from Hayti, South Dakota. From its report of Oct 16, 2026, 7:53 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 6DATE2026-10-17IDSR-ATY-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

42.0 F with a dew point of 27.0 F, 55 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,400 ft up.

Chart of the air at Watertown: temperature 42.0 degrees Fahrenheit and dew point 27.0, 55 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,400 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 STATION01,0002,0003,0004,0005,00010 F20 F30 F40 F50 FSATURATES 3,400 FT ABOVE THE STATION, AT 23.9 FTEMPERATURE 42.0 FDEW POINT 27.0 FSPREAD 15.0 FRELATIVE HUMIDITY 55 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 6DATE2026-10-17IDSR-ATY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (260 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 49 mph.

Plan of the wind at Watertown, north up: blowing from 260 degrees, the west, at 6 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light 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 260°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWatertown, the windSTATION REPORT · ASOS ATYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-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

0in

Snow on the ground

Measured at Hayti 1W (HYTS2), 1.2 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in South Dakota

24 places, each with its own forecast and its own instruments.

Near Hayti

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

Near Hayti

River and lake gauges