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James Island, South Carolina

Town in Charleston County, South Carolina

Air quality

The air at James Island

Index 46, good, led by fine particles. Read at 12 AM from its reporting area, Charleston (SC), 5 miles off.

46Good
  • Fine particles (PM2.5)46Good22 mi
  • Ozone36Good45 ppb22 mi
  • Coarse particles (PM10)14Good-
  • Nitrogen dioxide2Good2 ppb10.7 mi
  • Sulfur dioxide0Good0.1 ppb10.7 mi

The days ahead

Yesterday measured 41, good.

Smoke, the next 45 hours

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

SatSun

Precipitation

What has fallen at James Island

None in the last 3 days, to Fri 11 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 James Island, the next 45 hours

Visibility stays 6 miles or more through Sun 8 PM, lowest 7 miles Sat 11 AM.

SatSun

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

What is measuring near here

The 6 instruments nearest James Island, 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 now4 instruments

Ravenel Bridge US-17SC019

Beside a road/5.0 mi away/-26 ft/35 ft below here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Charleston 5.2 SESC-CR-245

In a volunteer observer's own ground/0.6 mi away/28 ft/19 ft above here

precip, snowfall, snow depth

Rank-

Custom HouseCHLS1

At a cooperative observer's station/3.4 mi away/39 ft/30 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Charleston Exec, drawn

The nearest airport reporting now, 4.3 mi from James Island, South Carolina. From its report of Oct 17, 2026, 12:35 AM 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 Charleston Exec, 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 JZIFIG. A THE SKY OVER CHARLESTON EXECSECTION, 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 MORE0510TITLECharleston Exec, the skySTATION REPORT · ASOS JZITYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-JZI-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

77.0 F with a dew point of 71.6 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,300 ft up.

Chart of the air at Charleston Exec: temperature 77.0 degrees Fahrenheit and dew point 71.6, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JZIFIG. B THE AIR AT CHARLESTON EXECTHE 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 F90 FSATURATES 1,300 FT ABOVE THE STATION, AT 70.2 FTEMPERATURE 77.0 FDEW POINT 71.6 FSPREAD 5.4 FRELATIVE HUMIDITY 83 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 POINTTITLECharleston Exec, the airSTATION REPORT · ASOS JZITYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-JZI-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (220 degrees) at 9 mph, gusting 15 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 15 mph.

Plan of the wind at Charleston Exec, north up: blowing from 220 degrees, the southwest, at 9 miles an hour, gusting 15; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JZIFIG. C THE WIND AT CHARLESTON EXECPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 220°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE13GUST, 15 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECharleston Exec, the windSTATION REPORT · ASOS JZITYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-JZI-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Charleston Exec, 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 James Island

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

Near James Island

River and lake gauges