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Harriman, Tennessee

City in Roane County, Tennessee

Air quality

The air at Harriman

Index 57, moderate, led by fine particles. Read at 11 PM from its reporting area, Knoxville (TN), 29 miles off.

57Moderate
  • Fine particles (PM2.5)57Moderate-
  • Ozone39Good-

The days ahead

Highest 51, moderate, today, led by fine particles. Yesterday measured 58, moderate.

Smoke, the next 46 hours

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

FriSat

Precipitation

What has fallen at Harriman

None in the last 3 days, to Thu 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 Harriman, the next 46 hours

Visibility stays 8 miles or more through Sat 8 PM, lowest 9 miles Fri 8 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Harriman, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.7 miles away.

measured now4 instruments

RockwoodRKW

At an airfield/7.9 mi away/1,654 ft/819 ft above here

temp, wind, gust, visibility, precip, pressure

Rank2of 1,019

measured daily2 instruments

Harriman 2.4 STN-RN-11

In a volunteer observer's own ground/2.7 mi away/1,002 ft/167 ft above here

precip, snowfall, snow depth

Rank-

KingstonKGST1

At a cooperative observer's station/4.6 mi away/761 ft/74 ft below here

snowfall, snow depth, precip, high, low

Rank702of 1,019

Station report

The weather at Rockwood, drawn

The nearest airport reporting now, 7.9 mi from Harriman, Tennessee. From its report of Oct 15, 2026, 10:15 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 Rockwood, 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 RKWFIG. A THE SKY OVER ROCKWOODSECTION, 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 MORE0510TITLERockwood, the skySTATION REPORT · ASOS RKWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-RKW-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

71.6 F with a dew point of 68.0 F, 88 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up.

Chart of the air at Rockwood: temperature 71.6 degrees Fahrenheit and dew point 68.0, 88 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RKWFIG. B THE AIR AT ROCKWOODTHE 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 FSATURATES 800 FT ABOVE THE STATION, AT 67.1 FTEMPERATURE 71.6 FDEW POINT 68.0 FSPREAD 3.6 FRELATIVE HUMIDITY 88 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 POINTTITLERockwood, the airSTATION REPORT · ASOS RKWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-RKW-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (230 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 14 mph.

Plan of the wind at Rockwood, north up: blowing from 230 degrees, the southwest, 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 RKWFIG. C THE WIND AT ROCKWOODPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 230°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLERockwood, the windSTATION REPORT · ASOS RKWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-RKW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Kingston (KGST1), 4.6 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Tennessee

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

Near Harriman

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

Near Harriman

River and lake gauges