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St. Olaf, Iowa

City in Clayton County, Iowa

Air quality

The air at St. Olaf

Index 26, good, led by fine particles. Read at 3 AM from its reporting area, Driftless Area South (WI), 52 miles off.

26Good
  • Fine particles (PM2.5)26Good-

The days ahead

Good each day through Sat Oct 17, led by ozone. Yesterday measured 12, good.

Smoke, the next 40 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at St. Olaf

1.05 in in the last 24 hours, 1.10 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
1.05in
Last 3 days
1.10in

Visibility

How far you can see at St. Olaf, the next 40 hours

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

FriSat

On the radar over St. Olaf, IowaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest St. Olaf, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.8 miles away.

measured now4 instruments

DecorahDEH

At an airfield/29.8 mi away/1,157 ft/259 ft above here

temp, wind, gust, visibility, precip, pressure

Rank197of 1,060

measured daily2 instruments

Elkader 3.6 WSWIA-CT-3

In a volunteer observer's own ground/7.8 mi away/1,111 ft/213 ft above here

precip, snowfall, snow depth

Rank-

Elkader 5SSWEKRI4

At a cooperative observer's station/10.0 mi away/791 ft/107 ft below here

snowfall, snow depth, precip, high, low

Rank686of 1,060

Station report

The weather at Decorah, drawn

The nearest airport reporting now, 29.8 mi from St. Olaf, Iowa. From its report of Oct 16, 2026, 3:35 AM local time: 3 of its 6 sheets.

The sky

Broken at 1,700 ft, broken at 2,800 ft, overcast at 4,500 ft; the ceiling is 1,700 ft; visibility 10 mi or more.

Section of the sky over Decorah, height above the station to scale: broken cloud with its base at 1,700 feet, broken cloud with its base at 2,800 feet, overcast cloud with its base at 4,500 feet, the ceiling at 1,700 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DEHFIG. A THE SKY OVER DECORAHSECTION, 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 4,500 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,800 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 1,700 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,700 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEDecorah, the skySTATION REPORT · ASOS DEHTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-DEH-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

42.8 F with a dew point of 42.8 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 1,700 ft.

Chart of the air at Decorah: temperature 42.8 degrees Fahrenheit and dew point 42.8, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 1,700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DEHFIG. B THE AIR AT DECORAHTHE 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, BKN 1,700 FTTEMPERATURE AND DEW POINT 42.8 F, 42.8 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 POINTTITLEDecorah, the airSTATION REPORT · ASOS DEHTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-DEH-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (300 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 22 mph.

Plan of the wind at Decorah, north up: blowing from 300 degrees, the west northwest, at 8 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DEHFIG. C THE WIND AT DECORAHPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 300°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDecorah, the windSTATION REPORT · ASOS DEHTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-DEH-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Iowa

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

Near St. Olaf

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

Near St. Olaf

River and lake gauges