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Marengo, Ohio

Village in Morrow County, Ohio

Air quality

The air at Marengo

Index 19, good, led by ozone. Read at 7 AM from its reporting area, Columbus (OH), 30 miles off.

19Good
  • Fine particles (PM2.5)15Good-
  • Ozone19Good-
  • Coarse particles (PM10)4Good-

The days ahead

Highest 53, moderate, Sun Oct 18, led by fine particles. Yesterday measured 29, good.

Smoke, the next 44 hours

No smoke near the ground through Mon 2 AM.

SatSun

Precipitation

What has fallen at Marengo

0.20 in in the last 24 hours, 0.25 in over the last 3 days, to Sat 6 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.20in
Last 3 days
0.25in

Visibility

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

Visibility stays 9 miles or more through Mon 2 AM, lowest 9 miles Sat 8 AM.

SatSun

On the radar over Marengo, OhioReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Marengo, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.4 miles away.

measured now4 instruments

measured daily2 instruments

Centerburg 4.2 NOH-MW-7

In a volunteer observer's own ground/6.8 mi away/1,359 ft/199 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Mount Vernon, drawn

The nearest airport reporting now, 15.8 mi from Marengo, Ohio. From its report of Oct 17, 2026, 7:15 AM local time: 3 of its 6 sheets.

The sky

Broken at 800 ft, overcast at 1,500 ft; the ceiling is 800 ft; visibility 3 mi.

Section of the sky over Mount Vernon, height above the station to scale: broken cloud with its base at 800 feet, overcast cloud with its base at 1,500 feet, the ceiling at 800 feet, and visibility of 3 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 4I3FIG. A THE SKY OVER MOUNT VERNONSECTION, 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 SHEETOVC 1,500 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 800 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 800 FTVISIBILITY, MILES: 3 MI0510TITLEMount Vernon, the skySTATION REPORT · ASOS 4I3TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-4I3-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

42.8 F with a dew point of 42.8 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 800 ft.

Chart of the air at Mount Vernon: temperature 42.8 degrees Fahrenheit and dew point 42.8, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 4I3FIG. B THE AIR AT MOUNT VERNONTHE 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 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, BKN 800 FTTEMPERATURE AND DEW POINT 42.8 F, 42.8 FRELATIVE HUMIDITY 100 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 POINTTITLEMount Vernon, the airSTATION REPORT · ASOS 4I3TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-4I3-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (350 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 24 mph.

Plan of the wind at Mount Vernon, north up: blowing from 350 degrees, the north, at 8 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 4I3FIG. C THE WIND AT MOUNT VERNONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 350°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMount Vernon, the windSTATION REPORT · ASOS 4I3TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-4I3-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Mount Vernon, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Centerburg 2 SE (CTRO1), 11.0 miles from here, read 16 Oct, 08:00. measured daily

Elsewhere in Ohio

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

Near Marengo

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

Near Marengo

River and lake gauges