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Hartsville/Trousdale County, Tennessee

Town in Trousdale County, Tennessee

Air quality

The air at Hartsville/Trousdale County

Index 32, good, led by fine particles. Read at 10 AM from its reporting area, Nashville (TN), 38 miles off.

32Good
  • Fine particles (PM2.5)32Good-
  • Ozone31Good33 ppb24 mi
  • Coarse particles (PM10)17Good-

The days ahead

Highest 51, moderate, Thu Oct 22, led by fine particles. Yesterday measured 41, good.

Smoke, the next 39 hours

No smoke near the ground through Fri 1 AM.

WedThu

Precipitation

What has fallen at Hartsville/Trousdale County

None in the last 3 days, to Wed 9 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 Hartsville/Trousdale County, the next 39 hours

Visibility stays 10 miles or more through Fri 1 AM.

WedThu

On the radar over Hartsville/Trousdale County, TennesseeReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Hartsville/Trousdale County, 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 now3 instruments

SumnerXNX

At an airfield/14.3 mi away/551 ft/5 ft above here

temp, wind, gust, visibility, precip, pressure

Rank380of 970

measured daily2 instruments

Hartsville 0.9 ETN-TR-10

In a volunteer observer's own ground/0.5 mi away/609 ft/63 ft above here

precip, snowfall, snow depth

Rank-

Lebanon 7NLNNT1

At a cooperative observer's station/8.9 mi away/446 ft/100 ft below here

snowfall, snow depth, precip, high, low

Rank183of 970

Station report

The weather at Sumner, drawn

The nearest airport reporting now, 14.3 mi from Hartsville/Trousdale County, Tennessee. From its report of Oct 21, 2026, 11:35 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 Sumner, 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 XNXFIG. A THE SKY OVER SUMNERSECTION, 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 MORE0510TITLESumner, the skySTATION REPORT · ASOS XNXTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-21IDSR-XNX-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

71.6 F with a dew point of 37.4 F, 29 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 7,700 ft up.

Chart of the air at Sumner: temperature 71.6 degrees Fahrenheit and dew point 37.4, 29 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 7,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT XNXFIG. B THE AIR AT SUMNERTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00020 F30 F40 F50 F60 F70 F80 FSATURATES 7,700 FT ABOVE THE STATION, AT 30.3 FTEMPERATURE 71.6 FDEW POINT 37.4 FSPREAD 34.2 FRELATIVE HUMIDITY 29 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 POINTTITLESumner, the airSTATION REPORT · ASOS XNXTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-21IDSR-XNX-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

At 6 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Sumner, north up: at 6 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT XNXFIG. C THE WIND AT SUMNERPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONDIRECTION NOT REPORTEDBEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESumner, the windSTATION REPORT · ASOS XNXTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-21IDSR-XNX-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Tennessee

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

Near Hartsville/Trousdale County

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

Near Hartsville/Trousdale County

River and lake gauges