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St. Thomas, North Dakota

City in Pembina County, North Dakota

Air quality

The air at St. Thomas

Index 19, good, led by ozone. Read at 4 AM from its reporting area, Red River Valley North (MN), 26 miles off.

19Good
  • Fine particles (PM2.5)6Good-
  • Ozone19Good-

The days ahead

Good each day through Sun Oct 18, led by ozone. Yesterday measured 19, good.

Smoke, the next 46 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at St. Thomas

0.02 in in the last 24 hours, and none in the 2 days before, to Fri 3 AM. 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 St. Thomas, the next 46 hours

Visibility stays 8 miles or more through Sun 1 AM, lowest 8 miles Fri 8 AM.

FriSat

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

What is measuring near here

The 4 instruments nearest St. Thomas, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.9 miles away.

measured now2 instruments

Bowesmont I-29 MP 196ND011

Beside a road/13.4 mi away/793 ft/48 ft below here

temp, pavement temp, wind, visibility, precip

Rank-

Cavalier2C8

At an airfield/14.1 mi away/892 ft/51 ft above here

temp, wind, gust, visibility, precip, pressure

Rank195of 312

measured daily2 instruments

Grafton 6.8 NND-WH-4

In a volunteer observer's own ground/7.9 mi away/831 ft/10 ft below here

precip, snowfall, snow depth

Rank-

State HospitalGRAN8

At a cooperative observer's station/13.9 mi away/830 ft/11 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Cavalier, drawn

The nearest airport reporting now, 14.1 mi from St. Thomas, North Dakota. From its report of Oct 16, 2026, 4:15 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 Cavalier, 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 2C8FIG. A THE SKY OVER CAVALIERSECTION, 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 MORE0510TITLECavalier, the skySTATION REPORT · ASOS 2C8TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-2C8-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

37.4 F with a dew point of 37.4 F, 100 per cent relative humidity. The air is saturated at the ground.

Chart of the air at Cavalier: temperature 37.4 degrees Fahrenheit and dew point 37.4, 100 per cent relative humidity; the air saturated at the ground; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 2C8FIG. B THE AIR AT CAVALIERTHE 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 GROUNDTEMPERATURE AND DEW POINT 37.4 F, 37.4 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 POINTTITLECavalier, the airSTATION REPORT · ASOS 2C8TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-2C8-2DRAWN 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 14 mph, gusting 21 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 25 mph.

Plan of the wind at Cavalier, north up: blowing from 330 degrees, the north northwest, at 14 miles an hour, gusting 21; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 2C8FIG. C THE WIND AT CAVALIERPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE19GUST, 21 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECavalier, the windSTATION REPORT · ASOS 2C8TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-2C8-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-

Snow on the ground

Elsewhere in North Dakota

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

Near St. Thomas

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

Near St. Thomas

River and lake gauges