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Centralia, Illinois

City in Marion County, Illinois

Air quality

The air at Centralia

Index 16, good, led by fine particles. Read at 12 AM from its reporting area, St. Louis (Metro-east) (IL), 46 miles off.

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

The days ahead

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

Smoke, the next 44 hours

No smoke near the ground through Sun 7 PM.

SatSun

Precipitation

What has fallen at Centralia

0.01 in in the last 24 hours, 0.83 in over the last 3 days, to Fri 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.01in
Last 3 days
0.83in

Visibility

How far you can see at Centralia, the next 44 hours

Visibility stays 10 miles or more through Sun 7 PM.

SatSun

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

What is measuring near here

The 6 instruments nearest Centralia, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.5 miles away.

measured now4 instruments

CentraliaENL

At an airfield/2.1 mi away/535 ft/36 ft above here

temp, wind, gust, visibility, precip, pressure

Rank547of 1,419

measured daily2 instruments

Centralia 1.6 WIL-CT-1

In a volunteer observer's own ground/1.5 mi away/492 ft/7 ft below here

precip, snowfall, snow depth

Rank-

CentraliaCNTI2

At a cooperative observer's station/2.1 mi away/472 ft/27 ft below here

snowfall, snow depth, precip, high, low

Rank802of 1,419

Station report

The weather at Centralia, drawn

The nearest airport reporting now, 2.1 mi from Centralia, Illinois. From its report of Oct 17, 2026, 12:15 AM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Centralia, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ENLFIG. A THE SKY OVER CENTRALIASECTION, 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 STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLECentralia, the skySTATION REPORT · ASOS ENLTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-ENL-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

50.0 F with a dew point of 45.0 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up.

Chart of the air at Centralia: temperature 50.0 degrees Fahrenheit and dew point 45.0, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ENLFIG. B THE AIR AT CENTRALIATHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 F60 FSATURATES 1,200 FT ABOVE THE STATION, AT 43.9 FTEMPERATURE 50.0 FDEW POINT 45.0 FSPREAD 5.0 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 POINTTITLECentralia, the airSTATION REPORT · ASOS ENLTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-ENL-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Centralia, north up: blowing from 330 degrees, the north northwest, at 9 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ENLFIG. C THE WIND AT CENTRALIAPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECentralia, the windSTATION REPORT · ASOS ENLTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-ENL-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Centralia, 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 Centralia

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

Near Centralia

River and lake gauges