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Merom, Indiana

Town in Sullivan County, Indiana

Air quality

The air at Merom

Index 19, good, led by ozone. Read at 1 AM from its reporting area, Vincennes (IN), 15 miles off.

19Good
  • Ozone19Good-

Smoke, the next 43 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Merom

0.31 in in the last 24 hours, 0.45 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.31in
Last 3 days
0.45in

Visibility

How far you can see at Merom, the next 43 hours

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

FriSat

On the radar over Merom, IndianaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Merom, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 6.5 miles away.

measured now4 instruments

measured daily2 instruments

Graysville 5 WNWGYVI3

At a cooperative observer's station/6.5 mi away/436 ft/106 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Terre Haute, drawn

The nearest airport reporting now, 30.6 mi from Merom, Indiana. From its report of Oct 16, 2026, 12:53 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 Terre Haute, 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 HUFFIG. A THE SKY OVER TERRE HAUTESECTION, 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 MORE0510TITLETerre Haute, the skySTATION REPORT · ASOS HUFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-HUF-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

73.0 F with a dew point of 70.0 F, 90 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 700 ft up.

Chart of the air at Terre Haute: temperature 73.0 degrees Fahrenheit and dew point 70.0, 90 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HUFFIG. B THE AIR AT TERRE HAUTETHE 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 700 FT ABOVE THE STATION, AT 69.3 FTEMPERATURE 73.0 FDEW POINT 70.0 FSPREAD 3.0 FRELATIVE HUMIDITY 90 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 POINTTITLETerre Haute, the airSTATION REPORT · ASOS HUFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-HUF-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (230 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 18 mph.

Plan of the wind at Terre Haute, north up: blowing from 230 degrees, the southwest, 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 HUFFIG. C THE WIND AT TERRE HAUTEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 230°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLETerre Haute, the windSTATION REPORT · ASOS HUFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-HUF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Graysville 5 WNW (GYVI3), 6.5 miles from here, read 9 Oct, 08:00. measured daily

Elsewhere in Indiana

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

Near Merom

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

Near Merom

River and lake gauges