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Clayton, North Carolina

Town in Johnston County, North Carolina

Air quality

The air at Clayton

Index 57, moderate, led by fine particles. Read at 11 PM from its reporting area, Johnston County (NC), 11 miles off.

57Moderate
  • Fine particles (PM2.5)57Moderate4.1 mi
  • Ozone24Good25 ppb4.1 mi
  • Coarse particles (PM10)-15.6 mi
  • Nitrogen dioxide3Good3.2 ppb15.6 mi
  • Sulfur dioxide0Good0 ppb15.6 mi
  • Carbon monoxide-0.2 ppm15.6 mi

The days ahead

Highest 58, moderate, today, led by ozone. Yesterday measured 56, moderate.

Smoke, the next 46 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 28 or under.

FriSat

Precipitation

What has fallen at Clayton

None in the last 3 days, to Thu 10 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 Clayton, the next 46 hours

Mist or haze: visibility falls to 2 miles Fri 5 AM.

FriSat

On the radar over Clayton, North CarolinaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Clayton, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now3 instruments

measured daily2 instruments

WTPCYNN7

At a water treatment plant/0.6 mi away/272 ft/62 ft below here

snowfall, snow depth, precip, high, low

Rank299of 2,255

Clayton 0.8 WNWNC-JH-79

In a volunteer observer's own ground/0.9 mi away/276 ft/58 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Smithfield, drawn

The nearest airport reporting now, 8.3 mi from Clayton, North Carolina. From its report of Oct 15, 2026, 11:15 PM local time: 3 of its 6 sheets.

The sky

Broken at 1,100 ft; the ceiling is 1,100 ft; visibility 10 mi or more.

Section of the sky over Smithfield, height above the station to scale: broken cloud with its base at 1,100 feet, the ceiling at 1,100 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JNXFIG. A THE SKY OVER SMITHFIELDSECTION, 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 SHEETBKN 1,100 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,100 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESmithfield, the skySTATION REPORT · ASOS JNXTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-JNX-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

71.6 F with a dew point of 68.0 F, 88 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 1,100 ft.

Chart of the air at Smithfield: temperature 71.6 degrees Fahrenheit and dew point 68.0, 88 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station, against the lowest cloud reported at 1,100 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JNXFIG. B THE AIR AT SMITHFIELDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00060 F70 F80 FSATURATES 800 FT ABOVE THE STATION, AT 67.1 FLOWEST CLOUD REPORTED, BKN 1,100 FTTEMPERATURE 71.6 FDEW POINT 68.0 FSPREAD 3.6 FRELATIVE HUMIDITY 88 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 POINTTITLESmithfield, the airSTATION REPORT · ASOS JNXTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-JNX-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Smithfield, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JNXFIG. C THE WIND AT SMITHFIELDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESmithfield, the windSTATION REPORT · ASOS JNXTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-JNX-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in North Carolina

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

Near Clayton

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

Near Clayton

River and lake gauges