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Harper, Iowa

City in Keokuk County, Iowa

Air quality

The air at Harper

Index 25, good, led by fine particles. Read at 7 AM from its reporting area, Iowa City (IA), 33 miles off.

25Good
  • Fine particles (PM2.5)25Good-

The days ahead

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

Smoke, the next 43 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Harper

0.08 in in the last 24 hours, 0.12 in over the last 3 days, to Fri 6 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.08in
Last 3 days
0.12in

Visibility

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

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

FriSat

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

What is measuring near here

The 6 instruments nearest Harper, 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

WashingtonAWG

At an airfield/20.5 mi away/751 ft/59 ft below here

temp, wind, gust, visibility, precip, pressure

Rank4of 1,060

measured daily2 instruments

Keota 0.1 ESEIA-KK-2

In a volunteer observer's own ground/5.1 mi away/804 ft/6 ft below here

precip, snowfall, snow depth

Rank-

SigourneySGYI4

At a cooperative observer's station/8.0 mi away/784 ft/26 ft below here

snowfall, snow depth, precip, high, low

Rank26of 1,060

Station report

The weather at Washington, drawn

The nearest airport reporting now, 20.5 mi from Harper, Iowa. From its report of Oct 16, 2026, 7:15 AM local time: 3 of its 6 sheets.

The sky

Overcast at 5,000 ft; the ceiling is 5,000 ft; visibility 10 mi or more.

Section of the sky over Washington, height above the station to scale: overcast cloud with its base at 5,000 feet, the ceiling at 5,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AWGFIG. A THE SKY OVER WASHINGTONSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 5,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 5,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEWashington, the skySTATION REPORT · ASOS AWGTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-AWG-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 46.4 F, 93 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up; the lowest cloud reported is at 5,000 ft.

Chart of the air at Washington: temperature 48.2 degrees Fahrenheit and dew point 46.4, 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, against the lowest cloud reported at 5,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AWGFIG. B THE AIR AT WASHINGTONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00030 F40 F50 F60 FSATURATES 400 FT ABOVE THE STATION, AT 46.0 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, OVC 5,000 FTTEMPERATURE AND DEW POINT 48.2 F, 46.4 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 POINTTITLEWashington, the airSTATION REPORT · ASOS AWGTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-AWG-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (290 degrees) at 10 mph, gusting 20 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 31 mph.

Plan of the wind at Washington, north up: blowing from 290 degrees, the west northwest, at 10 miles an hour, gusting 20; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AWGFIG. C THE WIND AT WASHINGTONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE19GUST, 20 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWashington, the windSTATION REPORT · ASOS AWGTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-AWG-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Sigourney (SGYI4), 8.0 miles from here, read 16 Oct, 06:00. measured daily

Elsewhere in Iowa

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

Near Harper

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

Near Harper

River and lake gauges