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Williamsfield, Illinois

Village in Knox County, Illinois

Air quality

The air at Williamsfield

Index 16, good, led by ozone. Read at 11 PM from its reporting area, Peoria (IL), 28 miles off.

16Good
  • Fine particles (PM2.5)10Good-
  • Ozone16Good-

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 25, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 7 PM.

SatSun

Precipitation

What has fallen at Williamsfield

0.02 in in the last 24 hours, 0.38 in over the last 3 days, to Fri 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.02in
Last 3 days
0.38in

Visibility

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

Visibility stays 9 miles or more through Sun 7 PM, lowest 9 miles Sat 8 AM.

SatSun

On the radar over Williamsfield, IllinoisReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Williamsfield, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.8 miles away.

measured now4 instruments

GalesburgGBG

At an airfield/21.5 mi away/804 ft/99 ft above here

temp, wind, gust, visibility, precip, pressure

Rank423of 1,419

measured daily2 instruments

Yates CityYATI2

At a cooperative observer's station/10.3 mi away/686 ft/19 ft below here

snowfall, snow depth, precip, high, low

Rank805of 1,419

Station report

The weather at Galesburg, drawn

The nearest airport reporting now, 21.5 mi from Williamsfield, Illinois. From its report of Oct 16, 2026, 11:35 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 Galesburg, 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 GBGFIG. A THE SKY OVER GALESBURGSECTION, 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 MORE0510TITLEGalesburg, the skySTATION REPORT · ASOS GBGTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-GBG-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

41.0 F with a dew point of 39.0 F, 93 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 500 ft up.

Chart of the air at Galesburg: temperature 41.0 degrees Fahrenheit and dew point 39.0, 93 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GBGFIG. B THE AIR AT GALESBURGTHE 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 FSATURATES 500 FT ABOVE THE STATION, AT 38.6 FTEMPERATURE AND DEW POINT 41.0 F, 39.0 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 POINTTITLEGalesburg, the airSTATION REPORT · ASOS GBGTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-GBG-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 26 mph.

Plan of the wind at Galesburg, north up: blowing from 340 degrees, the north northwest, at 6 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GBGFIG. C THE WIND AT GALESBURGPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEGalesburg, the windSTATION REPORT · ASOS GBGTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-GBG-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Yates City (YATI2), 10.3 miles from here, read 16 Oct, 08:00. measured daily

Elsewhere in Illinois

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

Near Williamsfield

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

Near Williamsfield

River and lake gauges