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Chapin, South Carolina

Town in Lexington County, South Carolina

Air quality

The air at Chapin

Index 72, moderate, led by fine particles. Read at 3 PM from its reporting area, Columbia (SC), 28 miles off.

72Moderate
  • Fine particles (PM2.5)72Moderate22.6 mi
  • Ozone50Good55 ppb22.6 mi
  • Coarse particles (PM10)26Good22.6 mi
  • Sulfur dioxide0Good0.4 ppb22.6 mi
  • Carbon monoxide-0.2 ppm22.6 mi

The days ahead

Yesterday measured 87, moderate.

Smoke, the next 41 hours

Little smoke near the ground through Sun 8 AM: the index from smoke stays at 39 or under.

FriSatSun

Precipitation

What has fallen at Chapin

None in the last 3 days, to Fri 3 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 Chapin, the next 41 hours

Visibility stays 3 miles or more through Sun 8 AM, lowest 4 miles Sat 5 AM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Chapin, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.1 miles away.

measured now4 instruments

I-26 @ I-126SC011

Beside a road/17.5 mi away/210 ft/232 ft below here

temp, pavement temp, wind, visibility, precip

Rank-

WinnsboroFDW

At an airfield/17.6 mi away/577 ft/135 ft above here

temp, wind, gust, visibility, precip, pressure

Rank210of 1,128

measured daily2 instruments

Little MountainLIMS1

At a cooperative observer's station/4.5 mi away/614 ft/172 ft above here

snowfall, snow depth, precip, high, low

Rank81of 1,128

Station report

The weather at Winnsboro, drawn

The nearest airport reporting now, 17.6 mi from Chapin, South Carolina. From its report of Oct 16, 2026, 4:15 PM local time: 3 of its 6 sheets.

The sky

Scattered at 5,500 ft; visibility 10 mi or more.

Section of the sky over Winnsboro, height above the station to scale: scattered cloud with its base at 5,500 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FDWFIG. A THE SKY OVER WINNSBOROSECTION, 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 STATION02,5005,0007,50010,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETSCT 5,500 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLEWinnsboro, the skySTATION REPORT · ASOS FDWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-FDW-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

82.4 F with a dew point of 62.6 F, 51 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,600 ft up; the lowest cloud reported is at 5,500 ft.

Chart of the air at Winnsboro: temperature 82.4 degrees Fahrenheit and dew point 62.6, 51 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,600 feet above the station, against the lowest cloud reported at 5,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FDWFIG. B THE AIR AT WINNSBOROTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,00050 F60 F70 F80 F90 FSATURATES 4,600 FT ABOVE THE STATION, AT 58.0 FLOWEST CLOUD REPORTED, SCT 5,500 FTTEMPERATURE 82.4 FDEW POINT 62.6 FSPREAD 19.8 FRELATIVE HUMIDITY 51 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 POINTTITLEWinnsboro, the airSTATION REPORT · ASOS FDWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-FDW-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (220 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 18 mph.

Plan of the wind at Winnsboro, north up: blowing from 220 degrees, the southwest, at 8 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FDWFIG. C THE WIND AT WINNSBOROPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 220°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWinnsboro, the windSTATION REPORT · ASOS FDWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-FDW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Little Mountain (LIMS1), 4.5 miles from here, read 16 Oct, 09:00. measured daily

Elsewhere in South Carolina

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

Near Chapin

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

Near Chapin

River and lake gauges