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Lebanon, Illinois

City in St. Clair County, Illinois

Air quality

The air at Lebanon

Index 23, good, led by ozone. Read at 11 PM from its reporting area, St. Louis (Metro-east) (IL), 9 miles off.

23Good
  • Fine particles (PM2.5)16Good18.9 mi
  • Ozone23Good14 ppb18.9 mi
  • Coarse particles (PM10)6Good18.9 mi
  • Nitrogen dioxide2Good2.6 ppb21.2 mi
  • Sulfur dioxide0Good0.9 ppb21.2 mi
  • Carbon monoxide-0.1 ppm21.2 mi

The days ahead

Highest moderate, today, led by fine particles. Yesterday measured 39, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Lebanon

0.28 in in the last 24 hours, 0.65 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.28in
Last 3 days
0.65in

Visibility

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

Visibility stays 7 miles or more through Sat 7 PM, lowest 7 miles Fri 5 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Lebanon, 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 now4 instruments

measured daily2 instruments

Station report

The weather at Belleville - Scott AFB, drawn

The nearest airport reporting now, 4.7 mi from Lebanon, Illinois. From its report of Oct 15, 2026, 10:55 PM local time: 3 of its 6 sheets.

The sky

Broken at 2,800 ft, broken at 3,500 ft; the ceiling is 2,800 ft; visibility 10 mi or more.

Section of the sky over Belleville - Scott AFB, height above the station to scale: broken cloud with its base at 2,800 feet, broken cloud with its base at 3,500 feet, the ceiling at 2,800 feet, and visibility of 10 mi or more.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 STATION01,0002,0003,0004,0005,0006,000ETAGESLOWTHE STATIONBKN 3,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 2,800 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEBelleville - Scott AFB, the skySTATION REPORT · ASOS BLVTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-BLV-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

73.0 F with a dew point of 67.5 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,300 ft up; the lowest cloud reported is at 2,800 ft.

Chart of the air at Belleville - Scott AFB: temperature 73.0 degrees Fahrenheit and dew point 67.5, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,300 feet above the station, against the lowest cloud reported at 2,800 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 STATION01,0002,0003,0004,00060 F70 F80 FSATURATES 1,300 FT ABOVE THE STATION, AT 66.2 FLOWEST CLOUD REPORTED, BKN 2,800 FTTEMPERATURE 73.0 FDEW POINT 67.5 FSPREAD 5.5 FRELATIVE HUMIDITY 83 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 6DATE2026-10-16IDSR-BLV-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (290 degrees) at 23 mph, gusting 31 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 31 mph.

Plan of the wind at Belleville - Scott AFB, north up: blowing from 290 degrees, the west northwest, at 23 miles an hour, gusting 31; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, 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 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 23 MPH6STRONG BREEZE25GUST, 31 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEBelleville - Scott AFB, the windSTATION REPORT · ASOS BLVTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-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

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Snow on the ground

Elsewhere in Illinois

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

Near Lebanon

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

Near Lebanon

River and lake gauges