Storm Station
Swansea, Illinois
58°
Partly cloudy· Feels like 58°·Light air 2 mph E
A chance of rain showers before 10am. Mostly cloudy, with a high near 74. Northeast wind around 3 mph. Chance of precipitation is 30%.
-UV
-Air quality
78%Humidity
44%Cloud

What is measuring near here

The 4 instruments nearest Swansea, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.2 miles away.

measured now2 instruments

Belleville - Scott AFBBLV

At an airfield/7.3 mi away/440 ft/136 ft below here

temp, wind, gust, visibility, precip, pressure

Rank43of 417

measured daily2 instruments

Swansea 0.7 ESEIL-SC-40

In a volunteer observer's own ground/1.2 mi away/505 ft/71 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Belleville - Scott AFB, drawn

The nearest airport reporting now, 7.3 mi from Swansea. From its report of Sep 27, 2026, 4:55 AM local time: 3 of its 6 sheets.

The sky

Overcast at 10,000 ft; the ceiling is 10,000 ft; visibility 7 mi.

Section of the sky over Belleville - Scott AFB, height above the station to scale: overcast cloud with its base at 10,000 feet, the ceiling at 10,000 feet, and visibility of 7 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BLVFIG. A THE SKY OVER BELLEVILLE - SCOTT AFBSECTION, 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: 7 MI0510TITLEBelleville - Scott AFB, the skySTATION REPORT · ASOS BLVTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-BLV-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

60.6 F with a dew point of 58.0 F, 91 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 600 ft up; the lowest cloud reported is at 10,000 ft.

Chart of the air at Belleville - Scott AFB: temperature 60.6 degrees Fahrenheit and dew point 58.0, 91 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 600 feet above the station, against the lowest cloud reported at 10,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BLVFIG. B THE AIR AT BELLEVILLE - SCOTT AFBTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00050 F60 F70 FSATURATES 600 FT ABOVE THE STATION, AT 57.4 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, OVC 10,000 FTTEMPERATURE AND DEW POINT 60.6 F, 58.0 FRELATIVE HUMIDITY 91 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 POINTTITLEBelleville - Scott AFB, the airSTATION REPORT · ASOS BLVTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-BLV-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northeast (20 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Belleville - Scott AFB, north up: blowing from 20 degrees, the north northeast, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BLVFIG. C THE WIND AT BELLEVILLE - SCOTT AFBPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 20°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEBelleville - Scott AFB, the windSTATION REPORT · ASOS BLVTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-BLV-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Belleville - Scott AFB, 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 Swansea

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