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Tri-City, Oregon

Community in Douglas County, Oregon

Air quality

The air at Tri-City

Index 19, good, led by fine particles. Read at 8 PM from its reporting area, Roseburg (OR), 17 miles off.

19Good
  • Fine particles (PM2.5)19Good-

The days ahead

Yesterday measured 21, good.

Smoke, the next 46 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 17 or under.

ThuFriSat

Precipitation

What has fallen at Tri-City

None in the last 3 days, to Thu 7 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 Tri-City, the next 46 hours

Visibility stays 9 miles or more through Sat 5 PM, lowest 9 miles Sat 8 AM.

ThuFriSat

On the radar over Tri-City, OregonReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Tri-City, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.3 miles away.

measured now4 instruments

measured daily2 instruments

RiddleRIDO3

At a cooperative observer's station/3.3 mi away/676 ft/3 ft above here

snowfall, snow depth, precip, high, low

Rank18of 1,635

Station report

The weather at Roseburg Municipal, drawn

The nearest airport reporting now, 17.5 mi from Tri-City, Oregon. From its report of Oct 15, 2026, 7:53 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 Roseburg Municipal, 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 RBGFIG. A THE SKY OVER ROSEBURG MUNICIPALSECTION, 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 MORE0510TITLERoseburg Municipal, the skySTATION REPORT · ASOS RBGTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-RBG-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

67.0 F with a dew point of 47.0 F, 49 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,600 ft up.

Chart of the air at Roseburg Municipal: temperature 67.0 degrees Fahrenheit and dew point 47.0, 49 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; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RBGFIG. B THE AIR AT ROSEBURG MUNICIPALTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00030 F40 F50 F60 F70 F80 FSATURATES 4,600 FT ABOVE THE STATION, AT 42.6 FTEMPERATURE 67.0 FDEW POINT 47.0 FSPREAD 20.0 FRELATIVE HUMIDITY 49 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 POINTTITLERoseburg Municipal, the airSTATION REPORT · ASOS RBGTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-RBG-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Roseburg Municipal, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RBGFIG. C THE WIND AT ROSEBURG MUNICIPALPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLERoseburg Municipal, the windSTATION REPORT · ASOS RBGTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-RBG-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Riddle (RIDO3), 3.3 miles from here, read 15 Oct, 16:00. measured daily

Elsewhere in Oregon

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

Near Tri-City

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

Near Tri-City

River and lake gauges