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Seneca, South Dakota

Town in Faulk County, South Dakota

Air quality

The air at Seneca

Index 14, good, led by coarse particles. Read at 10 PM from its reporting area, Aberdeen (SD), 57 miles off.

14Good
  • Fine particles (PM2.5)4Good-
  • Coarse particles (PM10)14Good-

The days ahead

Yesterday measured 18, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Seneca

0.28 in in the last 24 hours, and none in the 2 days before, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.28in
Last 3 days
0.28in

Visibility

How far you can see at Seneca, the next 45 hours

Visibility stays 10 miles or more through Sat 7 PM.

FriSat

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

What is measuring near here

The 5 instruments nearest Seneca, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.6 miles away.

measured now3 instruments

Gettysburg0D8

At an airfield/22.3 mi away/2,060 ft/156 ft above here

temp, wind, gust, visibility, precip, pressure

Rank453of 806

Blunt 6ENEBLNS2

At a river or reservoir gauge/39.2 mi away/1,722 ft/182 ft below here

temp, wind, gust, humidity, pressure

Rank-

measured daily2 instruments

Seneca 8.3 SSWSD-FK-8

In a volunteer observer's own ground/8.3 mi away/1,990 ft/86 ft above here

precip, snowfall, snow depth

Rank89of 806

FaulktonFAUS2

At a cooperative observer's station/19.0 mi away/1,578 ft/326 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Gettysburg, drawn

The nearest airport reporting now, 22.3 mi from Seneca, South Dakota. From its report of Oct 15, 2026, 10:35 PM local time: 3 of its 6 sheets.

The sky

Overcast at 1,800 ft; the ceiling is 1,800 ft; visibility 10 mi or more.

Section of the sky over Gettysburg, height above the station to scale: overcast cloud with its base at 1,800 feet, the ceiling at 1,800 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 0D8FIG. A THE SKY OVER GETTYSBURGSECTION, 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 SHEETOVC 1,800 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEGettysburg, the skySTATION REPORT · ASOS 0D8TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-0D8-1DRAWN 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 37.4 F, 81 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up; the lowest cloud reported is at 1,800 ft.

Chart of the air at Gettysburg: temperature 42.8 degrees Fahrenheit and dew point 37.4, 81 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station, against the lowest cloud reported at 1,800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 0D8FIG. B THE AIR AT GETTYSBURGTHE 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 FSATURATES 1,200 FT ABOVE THE STATION, AT 36.2 FLOWEST CLOUD REPORTED, OVC 1,800 FTTEMPERATURE 42.8 FDEW POINT 37.4 FSPREAD 5.4 FRELATIVE HUMIDITY 81 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 POINTTITLEGettysburg, the airSTATION REPORT · ASOS 0D8TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-0D8-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 30 mph, gusting 44 mph: force 6, a strong breeze on the Beaufort scale. The strongest gust today was 51 mph.

Plan of the wind at Gettysburg, north up: blowing from 330 degrees, the north northwest, at 30 miles an hour, gusting 44; beside it the Beaufort scale from calm to hurricane force, force 6, strong breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 0D8FIG. C THE WIND AT GETTYSBURGPLAN, 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, 30 MPH7NEAR GALE328GALE39GUST, 44 MPH9STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEGettysburg, the windSTATION REPORT · ASOS 0D8TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-0D8-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Gettysburg, in 6 sheets, each beside the Field Book plates that explain it

-

Snow on the ground

Elsewhere in South Dakota

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

Near Seneca

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

Near Seneca

River and lake gauges