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Sullivan's Island, South Carolina

Town in Charleston County, South Carolina

Air quality

The air at Sullivan's Island

Index 23, good, led by fine particles. Read at 3 AM from its reporting area, Charleston (SC), 7 miles off.

23Good
  • Fine particles (PM2.5)23Good-
  • Ozone10Good-
  • Coarse particles (PM10)9Good-

The days ahead

Yesterday measured 41, good.

Smoke, the next 42 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 17 or under.

FriSat

Precipitation

What has fallen at Sullivan's Island

None in the last 3 days, to Fri 2 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 Sullivan's Island, the next 42 hours

Visibility stays 4 miles or more through Sat 8 PM, lowest 4 miles Fri 8 AM.

FriSat

On the radar over Sullivan's Island, South CarolinaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 7 instruments nearest Sullivan's Island, 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 now5 instruments

Ravenel Bridge US-17SC019

Beside a road/5.3 mi away/-26 ft/33 ft below here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Sullivans IslandSULS1

At a cooperative observer's station/1.2 mi away/13 ft/6 ft above here

snowfall, snow depth, precip, high, low

Rank-

Mount Pleasant 2.7 SSC-CR-93

In a volunteer observer's own ground/1.8 mi away/11 ft/4 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Mount Pleasant, drawn

The nearest airport reporting now, 9.7 mi from Sullivan's Island, South Carolina. From its report of Oct 16, 2026, 2:55 AM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 4 mi.

Section of the sky over Mount Pleasant, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 4 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LROFIG. A THE SKY OVER MOUNT PLEASANTSECTION, 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: 4 MI0510TITLEMount Pleasant, the skySTATION REPORT · ASOS LROTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-LRO-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

68.0 F with a dew point of 68.0 F, 100 per cent relative humidity. The air is saturated at the ground.

Chart of the air at Mount Pleasant: temperature 68.0 degrees Fahrenheit and dew point 68.0, 100 per cent relative humidity; the air saturated at the ground; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LROFIG. B THE AIR AT MOUNT PLEASANTTHE 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 FSATURATED AT THE GROUNDTEMPERATURE AND DEW POINT 68.0 F, 68.0 FRELATIVE HUMIDITY 100 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 POINTTITLEMount Pleasant, the airSTATION REPORT · ASOS LROTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-LRO-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 Mount Pleasant, 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 LROFIG. C THE WIND AT MOUNT PLEASANTPLAN, 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 FORCE73TITLEMount Pleasant, the windSTATION REPORT · ASOS LROTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-LRO-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Mount Pleasant, 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 Sullivan's Island

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

Near Sullivan's Island

River and lake gauges