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Harmon, North Dakota

Community in Morton County, North Dakota

Air quality

The air at Harmon

Index 20, good, led by ozone. Read at 11 PM from its reporting area, Bismarck (ND), 13 miles off.

20Good
  • Fine particles (PM2.5)9Good12.5 mi
  • Ozone20Good23 ppb12.5 mi
  • Coarse particles (PM10)7Good12.5 mi
  • Nitrogen dioxide0Good0.7 ppb12.5 mi
  • Sulfur dioxide0Good0.1 ppb12.5 mi

The days ahead

Yesterday measured 52, moderate.

Smoke, the next 44 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Harmon

0.02 in in the last 24 hours, and none in the 2 days before, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.02in
Last 3 days
0.02in

Visibility

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

Visibility stays 9 miles or more through Sat 7 PM, lowest 9 miles Fri 7 AM.

FriSat

On the radar over Harmon, North DakotaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 7 instruments nearest Harmon, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.0 miles away.

measured now5 instruments

Mandan #1S2020

At a soil climate station/12.9 mi away/1,930 ft/189 ft above here

temp, humidity, soil temp, soil moisture

Rank91of 312

MandamY19

At an airfield/13.1 mi away/1,942 ft/201 ft above here

temp, wind, gust, visibility, precip, pressure

Rank250of 312

Washburn ESS US-83ND026

Beside a road/24.6 mi away/1,869 ft/128 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Mandan 8.7 NWND-MT-21

In a volunteer observer's own ground/3.0 mi away/1,825 ft/84 ft above here

precip, snowfall, snow depth

Rank-

Experiment StationMESN8

On a farm or research station/9.9 mi away/1,706 ft/35 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Mandam, drawn

The nearest airport reporting now, 13.1 mi from Harmon, North Dakota. From its report of Oct 15, 2026, 11:55 PM local time: 3 of its 6 sheets.

The sky

Scattered at 2,300 ft, overcast at 4,600 ft; the ceiling is 4,600 ft; visibility 10 mi or more.

Section of the sky over Mandam, height above the station to scale: scattered cloud with its base at 2,300 feet, overcast cloud with its base at 4,600 feet, the ceiling at 4,600 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT Y19FIG. A THE SKY OVER MANDAMSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 4,600 FTOVERCAST, 8 EIGHTHS OF THE SKYSCT 2,300 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 4,600 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMandam, the skySTATION REPORT · ASOS Y19TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-Y19-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

41.0 F with a dew point of 41.0 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 2,300 ft.

Chart of the air at Mandam: temperature 41.0 degrees Fahrenheit and dew point 41.0, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 2,300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT Y19FIG. B THE AIR AT MANDAMTHE 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, SCT 2,300 FTTEMPERATURE AND DEW POINT 41.0 F, 41.0 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 POINTTITLEMandam, the airSTATION REPORT · ASOS Y19TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-Y19-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 18 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 46 mph.

Plan of the wind at Mandam, north up: blowing from 330 degrees, the north northwest, at 18 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT Y19FIG. C THE WIND AT MANDAMPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 18 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMandam, the windSTATION REPORT · ASOS Y19TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-Y19-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in North Dakota

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

Near Harmon

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

Near Harmon

River and lake gauges