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Shell, Wyoming

Community in Big Horn County, Wyoming

Air quality

The air at Shell

Index 42, good, led by fine particles. Read at 10 PM from its reporting area, Sheridan (WY), 44 miles off.

42Good
  • Fine particles (PM2.5)42Good-
  • Coarse particles (PM10)4Good-

The days ahead

Yesterday measured 31, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 6 PM.

FriSat

Precipitation

What has fallen at Shell

None in the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

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

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Shell, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.2 miles away.

measured now4 instruments

measured daily2 instruments

Shell - COOPSHLW4

At a cooperative observer's station/1.2 mi away/4,301 ft/70 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Greybull/South Big Horn Cnty Apt, drawn

The nearest airport reporting now, 15.0 mi from Shell, Wyoming. From its report of Oct 15, 2026, 10:53 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 Greybull/South Big Horn Cnty Apt, 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 GEYFIG. A THE SKY OVER GREYBULL/SOUTH BIG HORN CNTY APTSECTION, 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 MORE0510TITLEGreybull/South Big Horn Cnty Apt, the skySTATION REPORT · ASOS GEYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-GEY-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

38.0 F with a dew point of 27.0 F, 64 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,500 ft up.

Chart of the air at Greybull/South Big Horn Cnty Apt: temperature 38.0 degrees Fahrenheit and dew point 27.0, 64 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GEYFIG. B THE AIR AT GREYBULL/SOUTH BIG HORN CNTY APTTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00010 F20 F30 F40 F50 FSATURATES 2,500 FT ABOVE THE STATION, AT 24.7 FTEMPERATURE 38.0 FDEW POINT 27.0 FSPREAD 11.0 FRELATIVE HUMIDITY 64 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 POINTTITLEGreybull/South Big Horn Cnty Apt, the airSTATION REPORT · ASOS GEYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-GEY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (260 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 47 mph.

Plan of the wind at Greybull/South Big Horn Cnty Apt, north up: blowing from 260 degrees, the west, at 10 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 GEYFIG. C THE WIND AT GREYBULL/SOUTH BIG HORN CNTY APTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 260°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEGreybull/South Big Horn Cnty Apt, the windSTATION REPORT · ASOS GEYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-GEY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Greybull/South Big Horn Cnty Apt, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Shell - COOP (SHLW4), 1.2 miles from here, read 11 Oct, 08:00. measured daily

Elsewhere in Wyoming

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

Near Shell

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

Near Shell

River and lake gauges