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Oswego, South Carolina

Community in Sumter County, South Carolina

Air quality

The air at Oswego

Index 27, good, led by ozone. Read at 7 AM from its reporting area, Columbia (SC), 34 miles off.

27Good
  • Fine particles (PM2.5)25Good-
  • Ozone27Good-
  • Coarse particles (PM10)8Good-

The days ahead

Yesterday measured 69, moderate.

Smoke, the next 44 hours

No smoke near the ground through Mon 2 AM.

SatSun

Precipitation

What has fallen at Oswego

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 Oswego, the next 44 hours

Visibility stays 8 miles or more through Mon 2 AM, lowest 8 miles Sat 8 AM.

SatSun

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

What is measuring near here

The 7 instruments nearest Oswego, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.0 miles away.

measured now5 instruments

SumterSMS

At an airfield/4.0 mi away/182 ft/41 ft above here

temp, wind, gust, visibility, precip, pressure

Rank501of 1,111

Pee DeeS2037

At a soil climate station/37.9 mi away/120 ft/21 ft below here

temp, humidity, soil temp, soil moisture

Rank772of 1,111

measured daily2 instruments

Sumter 9.8 NNESC-SM-31

In a volunteer observer's own ground/5.0 mi away/179 ft/38 ft above here

precip, snowfall, snow depth

Rank-

BishopvilleBSPS1

At a cooperative observer's station/15.0 mi away/207 ft/66 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Sumter, drawn

The nearest airport reporting now, 4.0 mi from Oswego, South Carolina. From its report of Oct 17, 2026, 7:15 AM local time: 3 of its 6 sheets.

The sky

A few clouds at 1,100 ft, overcast at 6,000 ft; the ceiling is 6,000 ft; visibility 10 mi or more.

Section of the sky over Sumter, height above the station to scale: a few clouds cloud with its base at 1,100 feet, overcast cloud with its base at 6,000 feet, the ceiling at 6,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SMSFIG. A THE SKY OVER SUMTERSECTION, 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 SHEETOVC 6,000 FTOVERCAST, 8 EIGHTHS OF THE SKYFEW 1,100 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 6,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESumter, the skySTATION REPORT · ASOS SMSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-SMS-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

59.0 F with a dew point of 59.0 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 1,100 ft.

Chart of the air at Sumter: temperature 59.0 degrees Fahrenheit and dew point 59.0, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 1,100 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SMSFIG. B THE AIR AT SUMTERTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, FEW 1,100 FTTEMPERATURE AND DEW POINT 59.0 F, 59.0 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 POINTTITLESumter, the airSTATION REPORT · ASOS SMSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-SMS-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 21 mph.

Plan of the wind at Sumter, north up: blowing from 340 degrees, the north northwest, at 9 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 SMSFIG. C THE WIND AT SUMTERPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESumter, the windSTATION REPORT · ASOS SMSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-SMS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Bishopville (BSPS1), 15.0 miles from here, read 16 Oct, 08:00. measured daily

Elsewhere in South Carolina

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

Near Oswego

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

Near Oswego

River and lake gauges