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Henderson, Iowa

City in Mills County, Iowa

Air quality

The air at Henderson

Index 27, good, led by fine particles. Read at 10 PM from its reporting area, Viking Lake State Park (IA), 23 miles off.

27Good
  • Fine particles (PM2.5)27Good23.2 mi
  • Ozone18Good20 ppb23.2 mi

The days ahead

Good each day through Fri Oct 16, led by fine particles. Yesterday measured 34, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Henderson

0.75 in in the last 24 hours, and none in the 2 days before, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.75in
Last 3 days
0.75in

Visibility

How far you can see at Henderson, the next 45 hours

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

FriSat

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

What is measuring near here

The 6 instruments nearest Henderson, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.1 miles away.

measured now4 instruments

Red OakRDK

At an airfield/12.5 mi away/1,040 ft/15 ft below here

temp, wind, gust, visibility, precip, pressure

Rank835of 1,060

measured daily2 instruments

Hastings 4 NEHSII4

At a cooperative observer's station/5.1 mi away/1,050 ft/5 ft below here

snowfall, snow depth, precip, high, low

Rank985of 1,060

Emerson 3.2 NEIA-MY-5

In a volunteer observer's own ground/7.7 mi away/1,196 ft/141 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Red Oak, drawn

The nearest airport reporting now, 12.5 mi from Henderson, Iowa. From its report of Oct 15, 2026, 10:55 PM local time: 3 of its 6 sheets.

The sky

A few clouds at 5,500 ft; visibility 10 mi or more.

Section of the sky over Red Oak, height above the station to scale: a few clouds cloud with its base at 5,500 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RDKFIG. A THE SKY OVER RED OAKSECTION, 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 SHEETFEW 5,500 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLERed Oak, the skySTATION REPORT · ASOS RDKTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-RDK-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 37.4 F, 66 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,500 ft up; the lowest cloud reported is at 5,500 ft.

Chart of the air at Red Oak: temperature 48.2 degrees Fahrenheit and dew point 37.4, 66 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,500 feet above the station, against the lowest cloud reported at 5,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RDKFIG. B THE AIR AT RED OAKTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,00020 F30 F40 F50 F60 FSATURATES 2,500 FT ABOVE THE STATION, AT 35.1 FLOWEST CLOUD REPORTED, FEW 5,500 FTTEMPERATURE 48.2 FDEW POINT 37.4 FSPREAD 10.8 FRELATIVE HUMIDITY 66 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 POINTTITLERed Oak, the airSTATION REPORT · ASOS RDKTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-RDK-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (310 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 31 mph.

Plan of the wind at Red Oak, north up: blowing from 310 degrees, the northwest, at 9 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 RDKFIG. C THE WIND AT RED OAKPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLERed Oak, the windSTATION REPORT · ASOS RDKTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-RDK-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Hastings 4 NE (HSII4), 5.1 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Iowa

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

Near Henderson

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

Near Henderson

River and lake gauges