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Cromwell, Iowa

City in Union County, Iowa

Air quality

The air at Cromwell

Index 30, good, led by fine particles. Read at 11 AM from its reporting area, Viking Lake State Park (IA), 31 miles off.

30Good
  • Fine particles (PM2.5)30Good-
  • Ozone20Good-

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 24, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 7 AM.

FriSatSun

Precipitation

What has fallen at Cromwell

0.15 in in the last 24 hours, 0.22 in over the last 3 days, to Fri 10 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.15in
Last 3 days
0.22in

Visibility

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

Visibility stays 7 miles or more through Sun 7 AM, lowest 8 miles Sat 8 AM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Cromwell, 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

CrestonCSQ

At an airfield/5.5 mi away/1,290 ft/3 ft above here

temp, wind, gust, visibility, precip, pressure

Rank650of 1,060

measured daily2 instruments

Cromwell 0.1 SIA-UN-5

In a volunteer observer's own ground/0.1 mi away/1,299 ft/12 ft above here

precip, snowfall, snow depth

Rank-

Creston 2 SWCRTI4

At a cooperative observer's station/3.5 mi away/1,289 ft/2 ft above here

snowfall, snow depth, precip, high, low

Rank1,023of 1,060

Station report

The weather at Creston, drawn

The nearest airport reporting now, 5.5 mi from Cromwell, Iowa. From its report of Oct 16, 2026, 11:15 AM local time: 3 of its 6 sheets.

The sky

Broken at 2,000 ft, overcast at 2,500 ft; the ceiling is 2,000 ft; visibility 10 mi or more.

Section of the sky over Creston, height above the station to scale: broken cloud with its base at 2,000 feet, overcast cloud with its base at 2,500 feet, the ceiling at 2,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CSQFIG. A THE SKY OVER CRESTONSECTION, 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 STATION05001,0001,5002,0002,5003,0003,5004,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 2,500 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLECreston, the skySTATION REPORT · ASOS CSQTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-CSQ-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 2,000 ft.

Chart of the air at Creston: 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 2,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CSQFIG. B THE AIR AT CRESTONTHE 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 1,200 FT ABOVE THE STATION, AT 39.8 FLOWEST CLOUD REPORTED, BKN 2,000 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 POINTTITLECreston, the airSTATION REPORT · ASOS CSQTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-CSQ-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 28 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 Creston, north up: blowing from 340 degrees, the north northwest, at 28 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 CSQFIG. C THE WIND AT CRESTONPLAN, 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, 28 MPH7NEAR GALE32GUST, 37 MPH8GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECreston, the windSTATION REPORT · ASOS CSQTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-CSQ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Creston 2 SW (CRTI4), 3.5 miles from here, read 15 Oct, 07:00. measured daily

Elsewhere in Iowa

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

Near Cromwell

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

Near Cromwell

River and lake gauges