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New Underwood, South Dakota

City in Pennington County, South Dakota

Air quality

The air at New Underwood

Index 27, good, led by ozone. Read at 10 PM from its reporting area, Rapid City (SD), 22 miles off.

27Good
  • Fine particles (PM2.5)5Good-
  • Ozone27Good-
  • Coarse particles (PM10)4Good-

The days ahead

Yesterday measured 36, good.

Smoke, the next 44 hours

Little smoke near the ground through Sun 6 PM: the index from smoke stays at 6 or under.

SatSun

Precipitation

What has fallen at New Underwood

None in the last 24 hours; 0.06 in over the last 3 days, to Fri 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.06in

Visibility

How far you can see at New Underwood, the next 44 hours

Visibility stays 10 miles or more through Sun 6 PM.

SatSun

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

What is measuring near here

The 6 instruments nearest New Underwood, 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

SD RWIS New UnderwoodSD049

Beside a road/5.0 mi away/3,009 ft/163 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

Rapid CityRAP

At an airfield/11.5 mi away/3,165 ft/319 ft above here

temp, wind, gust, visibility, precip, pressure

Rank286of 817

measured daily2 instruments

New Underwood 0.1 ENESD-PN-103

In a volunteer observer's own ground/0.1 mi away/2,856 ft/10 ft above here

precip, snowfall, snow depth

Rank-

Wfo Rapid CityUNRS2

At a cooperative observer's station/18.8 mi away/3,356 ft/510 ft above here

snowfall, snow depth, precip, high, low

Rank737of 817

Station report

The weather at Rapid City, drawn

The nearest airport reporting now, 11.5 mi from New Underwood, South Dakota. From its report of Oct 16, 2026, 10:52 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 Rapid City, 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 RAPFIG. A THE SKY OVER RAPID CITYSECTION, 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 MORE0510TITLERapid City, the skySTATION REPORT · ASOS RAPTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-RAP-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

43.0 F with a dew point of 25.0 F, 49 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,100 ft up.

Chart of the air at Rapid City: temperature 43.0 degrees Fahrenheit and dew point 25.0, 49 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,100 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RAPFIG. B THE AIR AT RAPID CITYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00010 F20 F30 F40 F50 FSATURATES 4,100 FT ABOVE THE STATION, AT 21.3 FTEMPERATURE 43.0 FDEW POINT 25.0 FSPREAD 18.0 FRELATIVE HUMIDITY 49 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 POINTTITLERapid City, the airSTATION REPORT · ASOS RAPTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-RAP-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south (180 degrees) at 3 mph: force 1, a light air on the Beaufort scale. The strongest gust today was 43 mph.

Plan of the wind at Rapid City, north up: blowing from 180 degrees, the south, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RAPFIG. C THE WIND AT RAPID CITYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 180°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLERapid City, the windSTATION REPORT · ASOS RAPTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-RAP-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Wfo Rapid City (UNRS2), 18.8 miles from here, read 16 Oct, 06:00. measured daily

Elsewhere in South Dakota

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

Near New Underwood

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

Near New Underwood

River and lake gauges