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Sumner, Iowa

City in Bremer County, Iowa

Air quality

The air at Sumner

Index 21, good, led by fine particles. Read at 12 AM from its reporting area, Waterloo (IA), 29 miles off.

21Good
  • Fine particles (PM2.5)21Good-
  • Ozone-7 ppb22.2 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 21, good.

Smoke, the next 43 hours

No smoke near the ground through Sun 7 PM.

SatSun

Precipitation

What has fallen at Sumner

0.04 in in the last 24 hours, 1.05 in over the last 3 days, to Sat 12 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.04in
Last 3 days
1.05in

Visibility

How far you can see at Sumner, the next 43 hours

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

SatSun

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

What is measuring near here

The 5 instruments nearest Sumner, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now3 instruments

HawkeyeHKYI4

Beside a road/10.9 mi away/1,074 ft/13 ft above here

temp, pavement temp, wind, visibility, precip

Rank863of 1,055

OelweinOLZ

At an airfield/13.1 mi away/1,076 ft/15 ft above here

temp, wind, gust, visibility, precip, pressure

Rank3of 1,055

measured daily2 instruments

Sumner 0.5 SEIA-BM-7

In a volunteer observer's own ground/0.6 mi away/1,063 ft/2 ft above here

precip, snowfall, snow depth

Rank-

Fayette 3NNWFYTI4

At a cooperative observer's station/13.8 mi away/1,122 ft/61 ft above here

snowfall, snow depth, precip, high, low

Rank695of 1,055

Station report

The weather at Oelwein, drawn

The nearest airport reporting now, 13.1 mi from Sumner, Iowa. From its report of Oct 17, 2026, 12:35 AM 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 Oelwein, 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 OLZFIG. A THE SKY OVER OELWEINSECTION, 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 MORE0510TITLEOelwein, the skySTATION REPORT · ASOS OLZTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-OLZ-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

35.6 F with a dew point of 33.8 F, 93 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up.

Chart of the air at Oelwein: temperature 35.6 degrees Fahrenheit and dew point 33.8, 93 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OLZFIG. B THE AIR AT OELWEINTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00020 F30 F40 F50 FSATURATES 400 FT ABOVE THE STATION, AT 33.4 FTEMPERATURE AND DEW POINT 35.6 F, 33.8 FRELATIVE HUMIDITY 93 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 POINTTITLEOelwein, the airSTATION REPORT · ASOS OLZTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-OLZ-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (350 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Oelwein, north up: blowing from 350 degrees, the north, at 5 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OLZFIG. C THE WIND AT OELWEINPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 350°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEOelwein, the windSTATION REPORT · ASOS OLZTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-OLZ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Fayette 3NNW (FYTI4), 13.8 miles from here, read 16 Oct, 07:00. measured daily

Elsewhere in Iowa

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

Near Sumner

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

Near Sumner

River and lake gauges