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Hamilton, Iowa

City in Marion County, Iowa

Air quality

The air at Hamilton

Index 14, good, led by ozone. Read at 10 PM from its reporting area, Des Moines (IA), 47 miles off.

14Good
  • Fine particles (PM2.5)11Good-
  • Ozone14Good-

The days ahead

Highest moderate, today, led by fine particles. Yesterday measured 20, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Hamilton

0.18 in in the last 24 hours, 0.19 in over the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.18in
Last 3 days
0.19in

Visibility

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

Visibility stays 7 miles or more through Sat 7 PM, lowest 8 miles Sat 4 AM.

FriSat

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

What is measuring near here

The 7 instruments nearest Hamilton, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.9 miles away.

measured now5 instruments

EddyvilleRDYI4

Beside a road/13.7 mi away/801 ft/105 ft below here

temp, pavement temp, wind, visibility, precip

Rank851of 1,060

KnoxvilleOXV

At an airfield/14.0 mi away/925 ft/19 ft above here

temp, wind, gust, visibility, precip, pressure

Rank170of 1,060

measured daily2 instruments

Albia 3 NNEALBI4

At a cooperative observer's station/9.5 mi away/820 ft/86 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Knoxville, drawn

The nearest airport reporting now, 14.0 mi from Hamilton, Iowa. From its report of Oct 15, 2026, 9:55 PM local time: 3 of its 6 sheets.

The sky

Broken at 2,100 ft, broken at 2,700 ft, overcast at 3,800 ft; the ceiling is 2,100 ft; visibility 10 mi or more.

Section of the sky over Knoxville, height above the station to scale: broken cloud with its base at 2,100 feet, broken cloud with its base at 2,700 feet, overcast cloud with its base at 3,800 feet, the ceiling at 2,100 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OXVFIG. A THE SKY OVER KNOXVILLESECTION, 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 STATION01,0002,0003,0004,0005,0006,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 3,800 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,700 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 2,100 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,100 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEKnoxville, the skySTATION REPORT · ASOS OXVTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-OXV-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

53.6 F with a dew point of 48.2 F, 82 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 2,100 ft.

Chart of the air at Knoxville: temperature 53.6 degrees Fahrenheit and dew point 48.2, 82 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 2,100 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OXVFIG. B THE AIR AT KNOXVILLETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 FSATURATES 1,200 FT ABOVE THE STATION, AT 46.9 FLOWEST CLOUD REPORTED, BKN 2,100 FTTEMPERATURE 53.6 FDEW POINT 48.2 FSPREAD 5.4 FRELATIVE HUMIDITY 82 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 POINTTITLEKnoxville, the airSTATION REPORT · ASOS OXVTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-OXV-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (310 degrees) at 20 mph, gusting 25 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 35 mph.

Plan of the wind at Knoxville, north up: blowing from 310 degrees, the northwest, at 20 miles an hour, gusting 25; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OXVFIG. C THE WIND AT KNOXVILLEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 20 MPH6STRONG BREEZE25GUST, 25 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEKnoxville, the windSTATION REPORT · ASOS OXVTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-OXV-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Knoxville, 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 Hamilton

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

Near Hamilton

River and lake gauges