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Bar Nunn, Wyoming

Town in Natrona County, Wyoming

Air quality

The air at Bar Nunn

Index 31, good, led by ozone. Read at 10 PM from its reporting area, Douglas (WY), 50 miles off.

31Good
  • Ozone31Good-
  • Coarse particles (PM10)5Good-

The days ahead

Yesterday measured 19, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 6 PM.

FriSat

Precipitation

What has fallen at Bar Nunn

0.28 in in the last 24 hours, 0.43 in over the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.28in
Last 3 days
0.43in

Visibility

How far you can see at Bar Nunn, the next 45 hours

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

On the radar over Bar Nunn, WyomingReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Bar Nunn, 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 now4 instruments

measured daily2 instruments

Bar Nunn 0.1 WSWWY-NT-106

In a volunteer observer's own ground/0.2 mi away/5,351 ft/level with here

precip, snowfall, snow depth

Rank-

Station report

The weather at Casper/Natrona INTL, drawn

The nearest airport reporting now, 5.9 mi from Bar Nunn, Wyoming. From its report of Oct 15, 2026, 9:53 PM 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 Casper/Natrona INTL, 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 CPRFIG. A THE SKY OVER CASPER/NATRONA INTLSECTION, 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 MORE0510TITLECasper/Natrona INTL, the skySTATION REPORT · ASOS CPRTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-CPR-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

35.0 F with a dew point of 25.0 F, 67 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,300 ft up.

Chart of the air at Casper/Natrona INTL: temperature 35.0 degrees Fahrenheit and dew point 25.0, 67 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CPRFIG. B THE AIR AT CASPER/NATRONA INTLTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00010 F20 F30 F40 F50 FSATURATES 2,300 FT ABOVE THE STATION, AT 22.9 FTEMPERATURE 35.0 FDEW POINT 25.0 FSPREAD 10.0 FRELATIVE HUMIDITY 67 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 POINTTITLECasper/Natrona INTL, the airSTATION REPORT · ASOS CPRTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-CPR-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northeast (40 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 25 mph.

Plan of the wind at Casper/Natrona INTL, north up: blowing from 40 degrees, the northeast, at 6 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CPRFIG. C THE WIND AT CASPER/NATRONA INTLPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 40°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECasper/Natrona INTL, the windSTATION REPORT · ASOS CPRTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-CPR-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Casper/Natrona INTL, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Wyoming

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

Near Bar Nunn

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

Near Bar Nunn

River and lake gauges