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Marion, Illinois

City in Williamson County, Illinois

Air quality

The air at Marion

Index 15, good, led by ozone. Read at 3 AM from its reporting area, Farrar (MO), 42 miles off.

15Good
  • Ozone15Good-

Smoke, the next 41 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Marion

0.03 in in the last 24 hours, 0.39 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.03in
Last 3 days
0.39in

Visibility

How far you can see at Marion, the next 41 hours

Visibility stays 7 miles or more through Sat 7 PM, lowest 7 miles Fri 8 PM.

FriSat

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

What is measuring near here

The 5 instruments nearest Marion, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.9 miles away.

measured now3 instruments

measured daily2 instruments

Marion 0.4 SWIL-WM-30

In a volunteer observer's own ground/0.9 mi away/443 ft/13 ft above here

precip, snowfall, snow depth

Rank-

West FrankfortWFRI2

At a cooperative observer's station/12.3 mi away/430 ft/level with here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Marion Regional, drawn

The nearest airport reporting now, 4.7 mi from Marion, Illinois. From its report of Oct 16, 2026, 3:35 AM local time: 3 of its 6 sheets.

The sky

Broken at 1,300 ft, broken at 2,000 ft, overcast at 6,000 ft; the ceiling is 1,300 ft; visibility 4 mi.

Section of the sky over Marion Regional, height above the station to scale: broken cloud with its base at 1,300 feet, broken cloud with its base at 2,000 feet, overcast cloud with its base at 6,000 feet, the ceiling at 1,300 feet, and visibility of 4 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MWAFIG. A THE SKY OVER MARION REGIONALSECTION, 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 6,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 1,300 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,300 FTVISIBILITY, MILES: 4 MI0510TITLEMarion Regional, the skySTATION REPORT · ASOS MWATYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MWA-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

59.0 F with a dew point of 55.4 F, 88 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 1,300 ft.

Chart of the air at Marion Regional: temperature 59.0 degrees Fahrenheit and dew point 55.4, 88 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station, against the lowest cloud reported at 1,300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MWAFIG. B THE AIR AT MARION REGIONALTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 800 FT ABOVE THE STATION, AT 54.5 FLOWEST CLOUD REPORTED, BKN 1,300 FTTEMPERATURE 59.0 FDEW POINT 55.4 FSPREAD 3.6 FRELATIVE HUMIDITY 88 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 POINTTITLEMarion Regional, the airSTATION REPORT · ASOS MWATYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MWA-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (320 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 28 mph.

Plan of the wind at Marion Regional, north up: blowing from 320 degrees, the 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 MWAFIG. C THE WIND AT MARION REGIONALPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 320°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMarion Regional, the windSTATION REPORT · ASOS MWATYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MWA-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Marion Regional, 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 Marion

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

Near Marion

River and lake gauges