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Delta, Iowa

City in Keokuk County, Iowa

Air quality

The air at Delta

Index 8, good, led by fine particles. Read at 1 PM from its reporting area, Iowa City (IA), 46 miles off.

8Good
  • Fine particles (PM2.5)8Good-

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 7 AM.

FriSatSun

Precipitation

What has fallen at Delta

0.04 in in the last 24 hours, 0.12 in over the last 3 days, to Fri 12 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.04in
Last 3 days
0.12in

Visibility

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

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

FriSatSun

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

What is measuring near here

The 6 instruments nearest Delta, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.1 miles away.

measured now4 instruments

OskaloosaOOA

At an airfield/10.8 mi away/840 ft/36 ft above here

temp, wind, gust, visibility, precip, pressure

Rank263of 1,060

measured daily2 instruments

SigourneySGYI4

At a cooperative observer's station/6.8 mi away/784 ft/20 ft below here

snowfall, snow depth, precip, high, low

Rank26of 1,060

Station report

The weather at Oskaloosa, drawn

The nearest airport reporting now, 10.8 mi from Delta, Iowa. From its report of Oct 16, 2026, 12:55 PM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Oskaloosa, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OOAFIG. A THE SKY OVER OSKALOOSASECTION, 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 STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEOskaloosa, the skySTATION REPORT · ASOS OOATYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-OOA-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

52.5 F with a dew point of 45.0 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.

Chart of the air at Oskaloosa: temperature 52.5 degrees Fahrenheit and dew point 45.0, 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; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OOAFIG. B THE AIR AT OSKALOOSATHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 F60 FSATURATES 1,700 FT ABOVE THE STATION, AT 43.3 FTEMPERATURE 52.5 FDEW POINT 45.0 FSPREAD 7.5 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 POINTTITLEOskaloosa, the airSTATION REPORT · ASOS OOATYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-OOA-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (350 degrees) at 22 mph, gusting 33 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 37 mph.

Plan of the wind at Oskaloosa, north up: blowing from 350 degrees, the north, at 22 miles an hour, gusting 33; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OOAFIG. C THE WIND AT OSKALOOSAPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 350°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 22 MPH6STRONG BREEZE257NEAR GALE32GUST, 33 MPH8GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEOskaloosa, the windSTATION REPORT · ASOS OOATYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-OOA-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Sigourney (SGYI4), 6.8 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 Delta

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

Near Delta

River and lake gauges