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Montezuma, Iowa

City in Poweshiek County, Iowa

Air quality

The air at Montezuma

Index 12, good, led by fine particles. Read at 11 PM from its reporting area, Iowa City (IA), 50 miles off.

12Good
  • Fine particles (PM2.5)12Good-

The days ahead

Good each day through Today, led by ozone. Yesterday measured 36, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Montezuma

0.47 in in the last 24 hours, and none in the 2 days before, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.47in
Last 3 days
0.47in

Visibility

How far you can see at Montezuma, the next 44 hours

Mist or haze: visibility falls to 2 miles Sat 8 AM.

FriSat

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

What is measuring near here

The 7 instruments nearest Montezuma, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now5 instruments

GrinnellGGI

At an airfield/13.8 mi away/1,007 ft/58 ft above here

temp, wind, gust, visibility, precip, pressure

Rank7of 1,060

measured daily2 instruments

Montezuma 1 WMZUI4

At a cooperative observer's station/0.4 mi away/961 ft/12 ft above here

snowfall, snow depth, precip, high, low

Rank840of 1,060

Montezuma 3.4 WIA-PW-3

In a volunteer observer's own ground/3.5 mi away/915 ft/34 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Grinnell, drawn

The nearest airport reporting now, 13.8 mi from Montezuma, Iowa. From its report of Oct 15, 2026, 11:55 PM local time: 3 of its 6 sheets.

The sky

Broken at 5,500 ft; the ceiling is 5,500 ft; visibility 10 mi or more.

Section of the sky over Grinnell, height above the station to scale: broken cloud with its base at 5,500 feet, the ceiling at 5,500 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 STATION02,5005,0007,50010,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETBKN 5,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 5,500 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

48.2 F with a dew point of 41.0 F, 76 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,700 ft up; the lowest cloud reported is at 5,500 ft.

Chart of the air at Grinnell: temperature 48.2 degrees Fahrenheit and dew point 41.0, 76 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,700 feet above the station, against the lowest cloud reported at 5,500 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 STATION01,0002,0003,0004,0005,0006,0007,00030 F40 F50 F60 FSATURATES 1,700 FT ABOVE THE STATION, AT 39.4 FLOWEST CLOUD REPORTED, BKN 5,500 FTTEMPERATURE 48.2 FDEW POINT 41.0 FSPREAD 7.2 FRELATIVE HUMIDITY 76 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 northwest (310 degrees) at 14 mph, gusting 24 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 32 mph.

Plan of the wind at Grinnell, north up: blowing from 310 degrees, the northwest, at 14 miles an hour, gusting 24; beside it the Beaufort scale from calm to hurricane force, force 4, moderate 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 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE19GUST, 24 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 Montezuma

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

Near Montezuma

River and lake gauges