Storm Station
Caseyville, Illinois
58°
Partly cloudy· Feels like 58°·Light air 2 mph E
A chance of rain showers before noon. Mostly cloudy, with a high near 73. Northeast wind around 3 mph. Chance of precipitation is 50%.
-UV
-Air quality
78%Humidity
59%Cloud

What is measuring near here

The 4 instruments nearest Caseyville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.

measured now2 instruments

Cahokia/St LouisCPS

At an airfield/8.1 mi away/413 ft/11 ft below here

temp, wind, gust, visibility, precip, pressure

Rank12of 417

measured daily2 instruments

Caseyville 0.2 EIL-SC-43

In a volunteer observer's own ground/0.1 mi away/409 ft/15 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Cahokia/St Louis, drawn

The nearest airport reporting now, 8.1 mi from Caseyville. From its report of Sep 27, 2026, 6:53 AM local time: 3 of its 6 sheets.

The sky

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

Section of the sky over Cahokia/St Louis, height above the station to scale: overcast cloud with its base at 10,000 feet, the ceiling at 10,000 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 STATION02,5005,0007,50010,00012,50015,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 10,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 10,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLECahokia/St Louis, the skySTATION REPORT · ASOS CPSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-CPS-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

60.0 F with a dew point of 58.0 F, 93 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 500 ft up; the lowest cloud reported is at 10,000 ft.

Chart of the air at Cahokia/St Louis: temperature 60.0 degrees Fahrenheit and dew point 58.0, 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, against the lowest cloud reported at 10,000 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 STATION01,0002,0003,0004,00050 F60 F70 FSATURATES 500 FT ABOVE THE STATION, AT 57.5 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, OVC 10,000 FTTEMPERATURE AND DEW POINT 60.0 F, 58.0 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 POINTTITLECahokia/St Louis, the airSTATION REPORT · ASOS CPSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-CPS-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west southwest (250 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Cahokia/St Louis, north up: blowing from 250 degrees, the west southwest, at 5 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 CPSFIG. C THE WIND AT CAHOKIA/ST LOUISPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 250°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECahokia/St Louis, the windSTATION REPORT · ASOS CPSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-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

-in

Snow on the ground

Elsewhere in Illinois

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

Near Caseyville

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