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Mount Olive, Illinois

City in Macoupin County, Illinois

Air quality

The air at Mount Olive

Index 25, good, led by ozone. Read at 10 PM from its reporting area, St. Louis (Metro-east) (IL), 37 miles off.

25Good
  • Fine particles (PM2.5)18Good-
  • Ozone25Good-
  • Coarse particles (PM10)7Good-

The days ahead

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

Smoke, the next 46 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Mount Olive

0.86 in in the last 24 hours, 1.15 in over the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.86in
Last 3 days
1.15in

Visibility

How far you can see at Mount Olive, the next 46 hours

Visibility stays 7 miles or more through Sat 7 PM, lowest 7 miles Fri 3 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Mount Olive, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.4 miles away.

measured now4 instruments

Litchfield3LF

At an airfield/6.9 mi away/689 ft/9 ft above here

temp, wind, gust, visibility, precip, pressure

Rank9of 1,393

measured daily2 instruments

Mount OliveMTOI2

At a cooperative observer's station/1.4 mi away/663 ft/17 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Litchfield, drawn

The nearest airport reporting now, 6.9 mi from Mount Olive, Illinois. From its report of Oct 15, 2026, 10:15 PM local time: 3 of its 6 sheets.

The sky

Scattered at 1,000 ft, broken at 3,300 ft, overcast at 7,000 ft; the ceiling is 3,300 ft; visibility 10 mi or more.

Section of the sky over Litchfield, height above the station to scale: scattered cloud with its base at 1,000 feet, broken cloud with its base at 3,300 feet, overcast cloud with its base at 7,000 feet, the ceiling at 3,300 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 3LFFIG. A THE SKY OVER LITCHFIELDSECTION, 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 STATION02,5005,0007,50010,00012,500ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 7,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 3,300 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 1,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 3,300 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLELitchfield, the skySTATION REPORT · ASOS 3LFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-3LF-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-013, FB-SKY-014

The air

69.0 F with a dew point of 67.0 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 1,000 ft.

Chart of the air at Litchfield: temperature 69.0 degrees Fahrenheit and dew point 67.0, 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 1,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 3LFFIG. B THE AIR AT LITCHFIELDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00060 F70 F80 FSATURATES 500 FT ABOVE THE STATION, AT 66.5 FLOWEST CLOUD REPORTED, SCT 1,000 FTTEMPERATURE AND DEW POINT 69.0 F, 67.0 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 POINTTITLELitchfield, the airSTATION REPORT · ASOS 3LFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-3LF-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (280 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 16 mph.

Plan of the wind at Litchfield, north up: blowing from 280 degrees, the west, at 10 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 3LFFIG. C THE WIND AT LITCHFIELDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 280°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELitchfield, the windSTATION REPORT · ASOS 3LFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-3LF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Litchfield, 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 Mount Olive

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

Near Mount Olive

River and lake gauges