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Petersburg, North Dakota

City in Nelson County, North Dakota

Air quality

The air at Petersburg

Index 19, good, led by ozone. Read at 6 AM from its reporting area, Red River Valley North (MN), 51 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 44 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Petersburg

0.03 in in the last 24 hours, and none in the 2 days before, to Fri 5 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.03in
Last 3 days
0.03in

Visibility

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

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

FriSat

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

What is measuring near here

The 6 instruments nearest Petersburg, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.0 miles away.

measured now4 instruments

Michigan US-2ND044

Beside a road/14.3 mi away/1,509 ft/32 ft below here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Petersburg 2 NPBGN8

At a cooperative observer's station/2.0 mi away/1,529 ft/12 ft below here

snowfall, snow depth, precip, high, low

Rank-

Larimore 0.4 SEND-GF-23

In a volunteer observer's own ground/19.1 mi away/1,139 ft/402 ft below here

precip, snowfall, snow depth

Rank15of 312

Station report

The weather at Grand_Forks_AFB, drawn

The nearest airport reporting now, 28.1 mi from Petersburg, North Dakota. From its report of Oct 16, 2026, 5:55 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 Grand_Forks_AFB, 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 RDRFIG. A THE SKY OVER GRAND_FORKS_AFBSECTION, 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 MORE0510TITLEGrand_Forks_AFB, the skySTATION REPORT · ASOS RDRTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-RDR-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

38.3 F with a dew point of 33.6 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,100 ft up.

Chart of the air at Grand_Forks_AFB: temperature 38.3 degrees Fahrenheit and dew point 33.6, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,100 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RDRFIG. B THE AIR AT GRAND_FORKS_AFBTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00020 F30 F40 F50 FSATURATES 1,100 FT ABOVE THE STATION, AT 32.5 FTEMPERATURE 38.3 FDEW POINT 33.6 FSPREAD 4.7 FRELATIVE HUMIDITY 83 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 POINTTITLEGrand_Forks_AFB, the airSTATION REPORT · ASOS RDRTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-RDR-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (350 degrees) at 15 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 40 mph.

Plan of the wind at Grand_Forks_AFB, north up: blowing from 350 degrees, the north, at 15 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 RDRFIG. C THE WIND AT GRAND_FORKS_AFBPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 350°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 15 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEGrand_Forks_AFB, the windSTATION REPORT · ASOS RDRTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-RDR-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Grand_Forks_AFB, 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 Petersburg

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

Near Petersburg

River and lake gauges