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St. Helena, Nebraska

Village in Cedar County, Nebraska

Air quality

The air at St. Helena

Index 34, good, led by fine particles. Read at 10 PM from its reporting area, Vermillion (SD), 16 miles off.

34Good
  • Fine particles (PM2.5)34Good-
  • Ozone19Good-

The days ahead

Yesterday measured 24, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at St. Helena

0.71 in in the last 24 hours, and none in the 2 days before, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.71in
Last 3 days
0.71in

Visibility

How far you can see at St. Helena, the next 46 hours

Visibility stays 9 miles or more through Sat 7 PM, lowest 9 miles Fri 3 AM.

FriSat

On the radar over St. Helena, NebraskaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 4 instruments nearest St. Helena, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 8.0 miles away.

measured now2 instruments

Crofton 8NGPDN1

At a river or reservoir gauge/11.6 mi away/1,259 ft/23 ft above here

temp, wind, gust, humidity, pressure

Rank415of 681

measured daily2 instruments

Crofton 3.7 ENE-CD-2

In a volunteer observer's own ground/10.7 mi away/1,563 ft/327 ft above here

precip, snowfall, snow depth

Rank-

CroftonCRFN1

At a cooperative observer's station/17.1 mi away/1,696 ft/460 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at D3-RWIS 81 213.48, drawn

The nearest instrument reporting now, 8.0 mi from St. Helena, Nebraska. From its report of Oct 15, 2026, 9:38 PM local time: 3 of its 5 sheets.

The air

45.5 F with a dew point of 29.4 F, 53 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,700 ft up.

Chart of the air at D3-RWIS 81 213.48: temperature 45.5 degrees Fahrenheit and dew point 29.4, 53 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NE064FIG. B THE AIR AT D3-RWIS 81 213.48THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00010 F20 F30 F40 F50 F60 FSATURATES 3,700 FT ABOVE THE STATION, AT 26.0 FTEMPERATURE 45.5 FDEW POINT 29.4 FSPREAD 16.1 FRELATIVE HUMIDITY 53 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 POINTTITLED3-RWIS 81 213.48, the airSTATION REPORT · RWIS NE064TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-NE064-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (293 degrees) at 20 mph: force 5, a fresh breeze on the Beaufort scale.

Plan of the wind at D3-RWIS 81 213.48, north up: blowing from 293 degrees, the west northwest, at 20 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NE064FIG. C THE WIND AT D3-RWIS 81 213.48PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 293°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 20 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLED3-RWIS 81 213.48, the windSTATION REPORT · RWIS NE064TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-NE064-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 1,181 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.67 inHg and the temperature at 54.8 F; it reports 45.5 F, 9.3 F colder than standard.

Section from sea level of where D3-RWIS 81 213.48 stands in the atmosphere, height to scale: the station 1,181 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.67 inches of mercury, and temperature, 54.8 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT NE064FIG. D WHERE D3-RWIS 81 213.48 STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERED3-RWIS 81 213.484 PER CENT OF THE AIR BELOW IT1,181 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE28.67 inHgSTANDARD TEMPERATURE HERE54.8 FTEMPERATURE, REPORTED45.5 FTITLED3-RWIS 81 213.48, the columnSTATION REPORT · RWIS NE064TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-NE064-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of D3-RWIS 81 213.48, in 5 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Nebraska

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

Near St. Helena

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

Near St. Helena

River and lake gauges