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Mount Vernon, South Dakota

City in Davison County, South Dakota

Air quality

The air at Mount Vernon

Index 23, good, led by ozone. Read at 1 AM from its reporting area, Santee Sioux Reservation (NE), 64 miles off.

23Good
  • Ozone23Good-

Smoke, the next 42 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Mount Vernon

0.09 in in the last 24 hours, 0.14 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.09in
Last 3 days
0.14in

Visibility

How far you can see at Mount Vernon, the next 42 hours

Visibility stays 9 miles or more through Sat 7 PM, lowest 10 miles Fri 5 AM.

FriSat

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

What is measuring near here

The 5 instruments nearest Mount Vernon, 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 now3 instruments

MitchellMHE

At an airfield/11.8 mi away/1,298 ft/107 ft below here

temp, wind, gust, visibility, precip, pressure

Rank142of 806

measured daily2 instruments

Mount Vernon 0.0 SSESD-DV-6

In a volunteer observer's own ground/0.1 mi away/1,409 ft/4 ft above here

precip, snowfall, snow depth

Rank-

MitchellMCLS2

At a cooperative observer's station/11.2 mi away/1,345 ft/60 ft below here

snowfall, snow depth, precip, high, low

Rank28of 806

Station report

The weather at Mitchell, drawn

The nearest airport reporting now, 11.8 mi from Mount Vernon, South Dakota. From its report of Oct 16, 2026, 1:53 AM local time: 3 of its 6 sheets.

The sky

Overcast at 2,000 ft; the ceiling is 2,000 ft; visibility 10 mi or more.

Section of the sky over Mitchell, height above the station to scale: overcast cloud with its base at 2,000 feet, the ceiling at 2,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MHEFIG. A THE SKY OVER MITCHELLSECTION, 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 2,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 2,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMitchell, the skySTATION REPORT · ASOS MHETYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MHE-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

46.0 F with a dew point of 41.0 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,100 ft up; the lowest cloud reported is at 2,000 ft.

Chart of the air at Mitchell: temperature 46.0 degrees Fahrenheit and dew point 41.0, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,100 feet above the station, against the lowest cloud reported at 2,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MHEFIG. B THE AIR AT MITCHELLTHE 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 F60 FSATURATES 1,100 FT ABOVE THE STATION, AT 39.9 FLOWEST CLOUD REPORTED, OVC 2,000 FTTEMPERATURE 46.0 FDEW POINT 41.0 FSPREAD 5.0 FRELATIVE HUMIDITY 83 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 POINTTITLEMitchell, the airSTATION REPORT · ASOS MHETYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MHE-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 23 mph, gusting 38 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 43 mph.

Plan of the wind at Mitchell, north up: blowing from 330 degrees, the north northwest, at 23 miles an hour, gusting 38; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MHEFIG. C THE WIND AT MITCHELLPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 23 MPH6STRONG BREEZE257NEAR GALE32GUST, 38 MPH8GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMitchell, the windSTATION REPORT · ASOS MHETYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MHE-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Mitchell (MCLS2), 11.2 miles from here, read 15 Oct, 22:39. measured daily

Elsewhere in South Dakota

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

Near Mount Vernon

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

Near Mount Vernon

River and lake gauges