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Mount Vernon, Ohio

City in Knox County, Ohio

Air quality

The air at Mount Vernon

Index 55, moderate, led by fine particles. Read at 11 PM from its reporting area, Columbus (OH), 39 miles off.

55Moderate
  • Fine particles (PM2.5)55Moderate-
  • Ozone18Good-
  • Coarse particles (PM10)35Good-

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 59, moderate.

Smoke, the next 45 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Mount Vernon

None in the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Mount Vernon, the next 45 hours

Visibility stays 3 miles or more through Sat 8 PM, lowest 4 miles Fri 1 PM.

FriSat

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

What is measuring near here

The 7 instruments nearest Mount Vernon, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now5 instruments

measured daily2 instruments

Station report

The weather at Mount Vernon, drawn

The nearest airport reporting now, 5.2 mi from Mount Vernon, Ohio. From its report of Oct 16, 2026, 12:15 AM local time: 3 of its 6 sheets.

The sky

Overcast at 400 ft; the ceiling is 400 ft; visibility 5 mi.

Section of the sky over Mount Vernon, height above the station to scale: overcast cloud with its base at 400 feet, the ceiling at 400 feet, and visibility of 5 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 400 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 400 FTVISIBILITY, MILES: 5 MI0510TITLEMount Vernon, the skySTATION REPORT · ASOS 4I3TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-4I3-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

66.2 F with a dew point of 66.2 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 400 ft.

Chart of the air at Mount Vernon: temperature 66.2 degrees Fahrenheit and dew point 66.2, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 400 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 STATION01,0002,0003,00060 F70 F80 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, OVC 400 FTTEMPERATURE AND DEW POINT 66.2 F, 66.2 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 6DATE2026-10-16IDSR-4I3-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (210 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Mount Vernon, north up: blowing from 210 degrees, the south southwest, 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 4I3FIG. C THE WIND AT MOUNT VERNONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 210°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMount Vernon, the windSTATION REPORT · ASOS 4I3TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-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), 11.3 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Ohio

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

Near Mount Vernon

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

Near Mount Vernon

River and lake gauges