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St. Stephen, South Carolina

Town in Berkeley County, South Carolina

Air quality

The air at St. Stephen

Index 65, moderate, led by fine particles. Read at 7 AM from its reporting area, Charleston (SC), 41 miles off.

65Moderate
  • Fine particles (PM2.5)65Moderate-
  • Ozone29Good-
  • Coarse particles (PM10)22Good-

The days ahead

Yesterday measured 44, good.

Smoke, the next 44 hours

No smoke near the ground through Mon 2 AM.

SatSun

Precipitation

What has fallen at St. Stephen

None in the last 3 days, to Sat 6 AM. 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 St. Stephen, the next 44 hours

Visibility stays 9 miles or more through Mon 2 AM, lowest 10 miles Sat 11 AM.

SatSun

On the radar over St. Stephen, South CarolinaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest St. Stephen, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now4 instruments

Citizen station GW0404GW0404

In a volunteer observer's own ground/8.1 mi away/36 ft/39 ft below here

temp, humidity, wind, precip, pressure

Rank-

PinopolisPNOS1

At a river or reservoir gauge/12.5 mi away/66 ft/9 ft below here

temp, wind, gust, humidity, pressure

Rank771of 1,111

measured daily2 instruments

St Stephen 0.6 SWSC-BK-89

In a volunteer observer's own ground/0.5 mi away/82 ft/7 ft above here

precip, snowfall, snow depth

Rank-

Moncks CornerMKCS1

At a cooperative observer's station/11.1 mi away/81 ft/6 ft above here

snowfall, snow depth, precip, high, low

Rank183of 1,111

Station report

The weather at Moncks Corner, drawn

The nearest airport reporting now, 16.4 mi from St. Stephen, South Carolina. From its report of Oct 17, 2026, 7:15 AM local time: 3 of its 6 sheets.

The sky

Overcast at 2,800 ft; the ceiling is 2,800 ft; visibility 10 mi or more.

Section of the sky over Moncks Corner, height above the station to scale: overcast cloud with its base at 2,800 feet, the ceiling at 2,800 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MKSFIG. A THE SKY OVER MONCKS CORNERSECTION, 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 STATION01,0002,0003,0004,0005,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 2,800 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 2,800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMoncks Corner, the skySTATION REPORT · ASOS MKSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-MKS-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

66.2 F with a dew point of 55.4 F, 68 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,500 ft up; the lowest cloud reported is at 2,800 ft.

Chart of the air at Moncks Corner: temperature 66.2 degrees Fahrenheit and dew point 55.4, 68 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, against the lowest cloud reported at 2,800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MKSFIG. B THE AIR AT MONCKS CORNERTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00040 F50 F60 F70 F80 FSATURATES 2,500 FT ABOVE THE STATION, AT 52.9 FLOWEST CLOUD REPORTED, OVC 2,800 FTTEMPERATURE 66.2 FDEW POINT 55.4 FSPREAD 10.8 FRELATIVE HUMIDITY 68 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 POINTTITLEMoncks Corner, the airSTATION REPORT · ASOS MKSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-MKS-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north (360 degrees) at 15 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 23 mph.

Plan of the wind at Moncks Corner, north up: blowing from 360 degrees, the north, at 15 miles an hour, gusting 23; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MKSFIG. C THE WIND AT MONCKS CORNERPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 360°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 15 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMoncks Corner, the windSTATION REPORT · ASOS MKSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-MKS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in South Carolina

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

Near St. Stephen

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

Near St. Stephen

River and lake gauges