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Paderborn, Illinois

Community in St. Clair County, Illinois

Air quality

The air at Paderborn

Index 16, good, led by fine particles. Read at 11 PM from its reporting area, St. Louis (Metro-east) (IL), 15 miles off.

16Good
  • Fine particles (PM2.5)16Good18.4 mi
  • Ozone13Good9 ppb18.4 mi
  • Coarse particles (PM10)4Good19.8 mi
  • Nitrogen dioxide1Good1.5 ppb19.8 mi
  • Sulfur dioxide0Good0.4 ppb19.1 mi
  • Carbon monoxide-0.1 ppm22 mi

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 Paderborn

0.14 in in the last 24 hours, 1.80 in over the last 3 days, to Fri 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.14in
Last 3 days
1.80in

Visibility

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

Visibility stays 9 miles or more through Sun 7 PM, lowest 10 miles Sat 8 AM.

SatSun

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

What is measuring near here

The 6 instruments nearest Paderborn, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.9 miles away.

measured now4 instruments

measured daily2 instruments

WaterlooWTRI2

At a cooperative observer's station/5.9 mi away/702 ft/213 ft above here

snowfall, snow depth, precip, high, low

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Station report

The weather at Cahokia/St Louis, drawn

The nearest airport reporting now, 15.8 mi from Paderborn, Illinois. From its report of Oct 16, 2026, 10:53 PM local time: 3 of its 6 sheets.

The sky

A few clouds at 2,500 ft, broken at 4,100 ft, overcast at 6,500 ft; the ceiling is 4,100 ft; visibility 10 mi or more.

Section of the sky over Cahokia/St Louis, height above the station to scale: a few clouds cloud with its base at 2,500 feet, broken cloud with its base at 4,100 feet, overcast cloud with its base at 6,500 feet, the ceiling at 4,100 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CPSFIG. A THE SKY OVER CAHOKIA/ST LOUISSECTION, 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 SKYBKN 4,100 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYFEW 2,500 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 4,100 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLECahokia/St Louis, the skySTATION REPORT · ASOS CPSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-CPS-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

52.0 F with a dew point of 45.0 F, 77 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up; the lowest cloud reported is at 2,500 ft.

Chart of the air at Cahokia/St Louis: temperature 52.0 degrees Fahrenheit and dew point 45.0, 77 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station, against the lowest cloud reported at 2,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CPSFIG. B THE AIR AT CAHOKIA/ST LOUISTHE 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 1,600 FT ABOVE THE STATION, AT 43.4 FLOWEST CLOUD REPORTED, FEW 2,500 FTTEMPERATURE 52.0 FDEW POINT 45.0 FSPREAD 7.0 FRELATIVE HUMIDITY 77 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 POINTTITLECahokia/St Louis, the airSTATION REPORT · ASOS CPSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-CPS-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 17 mph, gusting 24 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 39 mph.

Plan of the wind at Cahokia/St Louis, north up: blowing from 340 degrees, the north northwest, at 17 miles an hour, gusting 24; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CPSFIG. C THE WIND AT CAHOKIA/ST LOUISPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 17 MPH5FRESH BREEZE19GUST, 24 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECahokia/St Louis, the windSTATION REPORT · ASOS CPSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-CPS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Cahokia/St Louis, 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 Paderborn

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

Near Paderborn

River and lake gauges