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Decherd, Tennessee

City in Franklin County, Tennessee

Air quality

The air at Decherd

Index 27, good, led by fine particles. Read at 11 PM from its reporting area, Chattanooga (TN), 42 miles off.

27Good
  • Fine particles (PM2.5)27Good-
  • Ozone22Good-

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 65, moderate.

Smoke, the next 45 hours

No smoke near the ground through Sun 7 PM.

SatSun

Precipitation

What has fallen at Decherd

None in the last 3 days, to Fri 10 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 Decherd, the next 45 hours

Visibility stays 9 miles or more through Sun 7 PM, lowest 9 miles Sat 4 AM.

SatSun

On the radar over Decherd, TennesseeReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Decherd, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.1 miles away.

measured now4 instruments

WinchesterBGF

At an airfield/2.5 mi away/971 ft/24 ft below here

temp, wind, gust, visibility, precip, pressure

Rank13of 1,015

measured daily2 instruments

Station report

The weather at Winchester, drawn

The nearest airport reporting now, 2.5 mi from Decherd, Tennessee. From its report of Oct 16, 2026, 11:15 PM 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 Winchester, 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 BGFFIG. A THE SKY OVER WINCHESTERSECTION, 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 MORE0510TITLEWinchester, the skySTATION REPORT · ASOS BGFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-BGF-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

50.0 F with a dew point of 42.8 F, 76 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,700 ft up.

Chart of the air at Winchester: temperature 50.0 degrees Fahrenheit and dew point 42.8, 76 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BGFFIG. B THE AIR AT WINCHESTERTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 F60 FSATURATES 1,700 FT ABOVE THE STATION, AT 41.2 FTEMPERATURE 50.0 FDEW POINT 42.8 FSPREAD 7.2 FRELATIVE HUMIDITY 76 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 POINTTITLEWinchester, the airSTATION REPORT · ASOS BGFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-BGF-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (320 degrees) at 5 mph, gusting 12 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 26 mph.

Plan of the wind at Winchester, north up: blowing from 320 degrees, the northwest, at 5 miles an hour, gusting 12; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BGFFIG. C THE WIND AT WINCHESTERPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 320°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE8GUST, 12 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWinchester, the windSTATION REPORT · ASOS BGFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-BGF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Winchester 1 E (WCHT1), 2.1 miles from here, read 16 Oct, 12:00. measured daily

Elsewhere in Tennessee

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

Near Decherd

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

Near Decherd

River and lake gauges