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Egan, South Dakota

City in Moody County, South Dakota

Air quality

The air at Egan

Index 26, good, led by fine particles. Read at 4 AM from its reporting area, Brookings (SD), 25 miles off.

26Good
  • Fine particles (PM2.5)26Good-
  • Ozone17Good-
  • Coarse particles (PM10)7Good-

The days ahead

Yesterday measured 32, good.

Smoke, the next 46 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Egan

0.37 in in the last 24 hours, 0.39 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.37in
Last 3 days
0.39in

Visibility

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

Visibility stays 10 miles or more through Sun 1 AM.

FriSat

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

What is measuring near here

The 8 instruments nearest Egan, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.7 miles away.

measured now6 instruments

SD RWIS WardSD077

Beside a road/12.0 mi away/1,654 ft/123 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

MadisonMDS

At an airfield/21.8 mi away/1,709 ft/178 ft above here

temp, wind, gust, visibility, precip, pressure

Rank655of 806

measured daily2 instruments

Flandreau 0.5 SSWSD-MY-1

In a volunteer observer's own ground/3.7 mi away/1,558 ft/27 ft above here

precip, snowfall, snow depth

Rank-

FlandreauFLAS2

At a cooperative observer's station/4.3 mi away/1,549 ft/18 ft above here

snowfall, snow depth, precip, high, low

Rank63of 806

Station report

The weather at Madison, drawn

The nearest airport reporting now, 21.8 mi from Egan, South Dakota. From its report of Oct 16, 2026, 4:15 AM local time: 3 of its 6 sheets.

The sky

Scattered at 2,100 ft, broken at 2,600 ft, overcast at 3,600 ft; the ceiling is 2,600 ft; visibility 10 mi or more.

Section of the sky over Madison, height above the station to scale: scattered cloud with its base at 2,100 feet, broken cloud with its base at 2,600 feet, overcast cloud with its base at 3,600 feet, the ceiling at 2,600 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MDSFIG. A THE SKY OVER MADISONSECTION, 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 STATION01,0002,0003,0004,0005,0006,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 3,600 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,600 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 2,100 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 2,600 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMadison, the skySTATION REPORT · ASOS MDSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MDS-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

41.0 F with a dew point of 41.0 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 2,100 ft.

Chart of the air at Madison: temperature 41.0 degrees Fahrenheit and dew point 41.0, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 2,100 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MDSFIG. B THE AIR AT MADISONTHE 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, SCT 2,100 FTTEMPERATURE AND DEW POINT 41.0 F, 41.0 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 POINTTITLEMadison, the airSTATION REPORT · ASOS MDSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MDS-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 25 mph, gusting 37 mph: force 6, a strong breeze on the Beaufort scale. The strongest gust today was 39 mph.

Plan of the wind at Madison, north up: blowing from 340 degrees, the north northwest, at 25 miles an hour, gusting 37; beside it the Beaufort scale from calm to hurricane force, force 6, strong breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MDSFIG. C THE WIND AT MADISONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE25NOW, 25 MPH7NEAR GALE32GUST, 37 MPH8GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMadison, the windSTATION REPORT · ASOS MDSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MDS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Flandreau (FLAS2), 4.3 miles from here, read 15 Oct, 06:30. measured daily

Elsewhere in South Dakota

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

Near Egan

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

Near Egan

River and lake gauges