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Donnellson, Illinois

Village in Montgomery County, Illinois

Air quality

The air at Donnellson

Index 16, good, led by fine particles. Read at 11 PM from its reporting area, St. Louis (Metro-east) (IL), 41 miles off.

16Good
  • Fine particles (PM2.5)16Good-
  • Ozone13Good-
  • Coarse particles (PM10)4Good-

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 39, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 7 PM.

SatSun

Precipitation

What has fallen at Donnellson

0.04 in in the last 24 hours, 1.05 in over the last 3 days, to Fri 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.04in
Last 3 days
1.05in

Visibility

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

Visibility stays 9 miles or more through Sun 7 PM, lowest 10 miles Sat 7 AM.

SatSun

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

What is measuring near here

The 6 instruments nearest Donnellson, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 8.4 miles away.

measured now4 instruments

Litchfield3LF

At an airfield/14.1 mi away/689 ft/73 ft above here

temp, wind, gust, visibility, precip, pressure

Rank358of 1,419

measured daily2 instruments

HillsboroHLBI2

At a cooperative observer's station/8.4 mi away/653 ft/37 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Litchfield, drawn

The nearest airport reporting now, 14.1 mi from Donnellson, Illinois. From its report of Oct 16, 2026, 11:15 PM local time: 3 of its 6 sheets.

The sky

Scattered at 3,700 ft, overcast at 6,500 ft; the ceiling is 6,500 ft; visibility 10 mi or more.

Section of the sky over Litchfield, height above the station to scale: scattered cloud with its base at 3,700 feet, overcast cloud with its base at 6,500 feet, the ceiling at 6,500 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 3LFFIG. A THE SKY OVER LITCHFIELDSECTION, 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 SHEETOVC 6,500 FTOVERCAST, 8 EIGHTHS OF THE SKYSCT 3,700 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 6,500 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLELitchfield, the skySTATION REPORT · ASOS 3LFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-3LF-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-013, FB-SKY-014

The air

49.0 F with a dew point of 42.8 F, 79 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,400 ft up; the lowest cloud reported is at 3,700 ft.

Chart of the air at Litchfield: temperature 49.0 degrees Fahrenheit and dew point 42.8, 79 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,400 feet above the station, against the lowest cloud reported at 3,700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 3LFFIG. B THE AIR AT LITCHFIELDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00030 F40 F50 F60 FSATURATES 1,400 FT ABOVE THE STATION, AT 41.4 FLOWEST CLOUD REPORTED, SCT 3,700 FTTEMPERATURE 49.0 FDEW POINT 42.8 FSPREAD 6.2 FRELATIVE HUMIDITY 79 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 POINTTITLELitchfield, the airSTATION REPORT · ASOS 3LFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-3LF-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 13 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 30 mph.

Plan of the wind at Litchfield, north up: blowing from 330 degrees, the north northwest, at 13 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 3LFFIG. C THE WIND AT LITCHFIELDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELitchfield, the windSTATION REPORT · ASOS 3LFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-3LF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Illinois

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

Near Donnellson

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

Near Donnellson

River and lake gauges