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Guernsey, Iowa

City in Poweshiek County, Iowa

Air quality

The air at Guernsey

Index 20, good, led by fine particles. Read at 4 AM from its reporting area, Iowa City (IA), 40 miles off.

20Good
  • Fine particles (PM2.5)20Good-

The days ahead

Good each day through Today, led by ozone. Yesterday measured 26, good.

Smoke, the next 46 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Guernsey

0.41 in in the last 24 hours, 0.45 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.41in
Last 3 days
0.45in

Visibility

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

Visibility stays 7 miles or more through Sun 1 AM, lowest 8 miles Sat 5 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Guernsey, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.6 miles away.

measured now4 instruments

VictorVCTI4

Beside a road/4.6 mi away/865 ft/36 ft above here

temp, pavement temp, wind, visibility, precip

Rank851of 1,060

GrinnellGGI

At an airfield/20.5 mi away/1,007 ft/178 ft above here

temp, wind, gust, visibility, precip, pressure

Rank7of 1,060

measured daily2 instruments

BrooklynBRKI4

At a cooperative observer's station/7.2 mi away/827 ft/2 ft below here

snowfall, snow depth, precip, high, low

Rank-

Brooklyn 0.2 WSWIA-PW-5

In a volunteer observer's own ground/7.8 mi away/904 ft/75 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Grinnell, drawn

The nearest airport reporting now, 20.5 mi from Guernsey, Iowa. From its report of Oct 16, 2026, 4:35 AM local time: 3 of its 6 sheets.

The sky

Scattered at 4,000 ft, overcast at 4,500 ft; the ceiling is 4,500 ft; visibility 10 mi or more.

Section of the sky over Grinnell, height above the station to scale: scattered cloud with its base at 4,000 feet, overcast cloud with its base at 4,500 feet, the ceiling at 4,500 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GGIFIG. A THE SKY OVER GRINNELLSECTION, 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 SKYSCT 4,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 4,500 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEGrinnell, the skySTATION REPORT · ASOS GGITYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-GGI-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

46.0 F with a dew point of 40.3 F, 80 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,300 ft up; the lowest cloud reported is at 4,000 ft.

Chart of the air at Grinnell: temperature 46.0 degrees Fahrenheit and dew point 40.3, 80 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,300 feet above the station, against the lowest cloud reported at 4,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GGIFIG. B THE AIR AT GRINNELLTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00030 F40 F50 F60 FSATURATES 1,300 FT ABOVE THE STATION, AT 39.0 FLOWEST CLOUD REPORTED, SCT 4,000 FTTEMPERATURE 46.0 FDEW POINT 40.3 FSPREAD 5.7 FRELATIVE HUMIDITY 80 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 POINTTITLEGrinnell, the airSTATION REPORT · ASOS GGITYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-GGI-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (280 degrees) at 12 mph, gusting 22 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 22 mph.

Plan of the wind at Grinnell, north up: blowing from 280 degrees, the west, at 12 miles an hour, gusting 22; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GGIFIG. C THE WIND AT GRINNELLPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 280°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 12 MPH4MODERATE BREEZE135FRESH BREEZE19GUST, 22 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEGrinnell, the windSTATION REPORT · ASOS GGITYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-GGI-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Grinnell, 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 Guernsey

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

Near Guernsey

River and lake gauges