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Idanha, Oregon

City in Marion County, Oregon

Air quality

The air at Idanha

Index 8, good, led by fine particles. Read at 8 PM from its reporting area, North Santiam Canyon (OR), 15 miles off.

8Good
  • Fine particles (PM2.5)8Good-

The days ahead

Yesterday measured 18, good.

Smoke, the next 46 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 33 or under.

ThuFriSat

Precipitation

What has fallen at Idanha

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 Idanha, the next 46 hours

Visibility stays 3 miles or more through Sat 5 PM, lowest 3 miles Sat 1 PM.

ThuFriSat

On the radar over Idanha, OregonReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Idanha, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.6 miles away.

measured now3 instruments

measured daily2 instruments

Marion Forks Fish HatcheryMNFO3

At a cooperative observer's station/8.5 mi away/2,533 ft/778 ft above here

snowfall, snow depth, precip, high, low

Rank-

Idanha 16.3 ENEOR-JF-12

In a volunteer observer's own ground/16.1 mi away/4,961 ft/3,206 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at US20 WB at Santiam Jct MP74.8, drawn

The nearest instrument reporting now, 19.3 mi from Idanha, Oregon. From its report of Oct 15, 2026, 7:29 PM local time: 3 of its 5 sheets.

The air

59.4 F with a dew point of 33.7 F, 38 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 5,800 ft up.

Chart of the air at US20 WB at Santiam Jct MP74.8: temperature 59.4 degrees Fahrenheit and dew point 33.7, 38 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 5,800 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OD140FIG. B THE AIR AT US20 WB AT SANTIAM JCT MP74.8THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,0008,00020 F30 F40 F50 F60 F70 FSATURATES 5,800 FT ABOVE THE STATION, AT 28.4 FTEMPERATURE 59.4 FDEW POINT 33.7 FSPREAD 25.6 FRELATIVE HUMIDITY 38 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 POINTTITLEUS20 WB at Santiam Jct MP74.8, the airSTATION REPORT · RWIS OD140TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-OD140-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (71 degrees) at 9 mph, gusting 17 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 30 mph.

Plan of the wind at US20 WB at Santiam Jct MP74.8, north up: blowing from 71 degrees, the east northeast, at 9 miles an hour, gusting 17; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OD140FIG. C THE WIND AT US20 WB AT SANTIAM JCT MP74.8PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 71°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE13GUST, 17 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEUS20 WB at Santiam Jct MP74.8, the windSTATION REPORT · RWIS OD140TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-OD140-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 3,766 ft above sea level, 13 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 26.07 inHg and the temperature at 45.6 F; it reports 59.4 F, 13.8 F warmer than standard.

Section from sea level of where US20 WB at Santiam Jct MP74.8 stands in the atmosphere, height to scale: the station 3,766 feet above sea level with 13 per cent of the air below it; the standard atmosphere's pressure there, 26.07 inches of mercury, and temperature, 45.6 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OD140FIG. D WHERE US20 WB AT SANTIAM JCT MP74.8 STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHEREUS20 WB AT SANTIAM JCT MP74.813 PER CENT OF THE AIR BELOW IT3,766 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE26.07 inHgSTANDARD TEMPERATURE HERE45.6 FTEMPERATURE, REPORTED59.4 FTITLEUS20 WB at Santiam Jct MP74.8, the columnSTATION REPORT · RWIS OD140TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-OD140-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of US20 WB at Santiam Jct MP74.8, in 5 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Oregon

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

Near Idanha

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

Near Idanha

River and lake gauges