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Melvin, Iowa

City in Osceola County, Iowa

Air quality

The air at Melvin

Index 29, good, led by fine particles. Read at 10 PM from its reporting area, Sioux Falls (SD), 58 miles off.

29Good
  • Fine particles (PM2.5)29Good-
  • Ozone19Good-
  • Coarse particles (PM10)23Good-

The days ahead

Yesterday measured 26, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Melvin

0.70 in in the last 24 hours, and none in the 2 days before, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.70in
Last 3 days
0.70in

Visibility

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

Visibility stays 8 miles or more through Sat 7 PM, lowest 9 miles Sat 2 AM.

FriSat

On the radar over Melvin, IowaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Melvin, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.3 miles away.

measured now3 instruments

SibleyRSYI4

Beside a road/11.5 mi away/1,574 ft/4 ft below here

temp, pavement temp, wind, visibility, precip

Rank851of 1,060

SheldonSHL

At an airfield/12.7 mi away/1,418 ft/160 ft below here

temp, wind, gust, visibility, precip, pressure

Rank216of 1,060

measured daily2 instruments

Sanborn 0.4 NIA-OB-7

In a volunteer observer's own ground/7.3 mi away/1,563 ft/15 ft below here

precip, snowfall, snow depth

Rank-

SanbornSNBI4

At a cooperative observer's station/7.8 mi away/1,526 ft/52 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Sheldon, drawn

The nearest airport reporting now, 12.7 mi from Melvin, Iowa. From its report of Oct 15, 2026, 10:15 PM local time: 3 of its 6 sheets.

The sky

Overcast at 4,100 ft; the ceiling is 4,100 ft; visibility 10 mi or more.

Section of the sky over Sheldon, height above the station to scale: overcast cloud with its base at 4,100 feet, the ceiling at 4,100 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SHLFIG. A THE SKY OVER SHELDONSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 4,100 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 4,100 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESheldon, the skySTATION REPORT · ASOS SHLTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SHL-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

46.4 F with a dew point of 41.0 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 4,100 ft.

Chart of the air at Sheldon: temperature 46.4 degrees Fahrenheit and dew point 41.0, 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 4,100 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SHLFIG. B THE AIR AT SHELDONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00030 F40 F50 F60 FSATURATES 1,200 FT ABOVE THE STATION, AT 39.8 FLOWEST CLOUD REPORTED, OVC 4,100 FTTEMPERATURE 46.4 FDEW POINT 41.0 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 POINTTITLESheldon, the airSTATION REPORT · ASOS SHLTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SHL-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (300 degrees) at 16 mph, gusting 25 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 31 mph.

Plan of the wind at Sheldon, north up: blowing from 300 degrees, the west northwest, at 16 miles an hour, gusting 25; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SHLFIG. C THE WIND AT SHELDONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 300°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 16 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 25 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESheldon, the windSTATION REPORT · ASOS SHLTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SHL-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Sanborn (SNBI4), 7.8 miles from here, read 6 Oct, 08:00. measured daily

Elsewhere in Iowa

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

Near Melvin

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

Near Melvin

River and lake gauges