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Mehama, Oregon

Community in Marion County, Oregon

Air quality

The air at Mehama

Index 38, good, led by fine particles. Read at 10 PM from its reporting area, Lyons (OR), 1 mile off.

38Good
  • Fine particles (PM2.5)38Good1 mi

The days ahead

Yesterday measured 24, good.

Smoke, the next 43 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 28 or under.

FriSat

Precipitation

What has fallen at Mehama

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 Mehama, the next 43 hours

Visibility stays 4 miles or more through Sat 5 PM, lowest 4 miles Sat 10 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Mehama, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now4 instruments

Salem/McnarySLE

At an airfield/20.1 mi away/200 ft/410 ft below here

temp, wind, gust, visibility, precip, pressure

Rank5of 1,635

measured daily2 instruments

Lyons 0.8 WNWOR-LN-91

In a volunteer observer's own ground/0.6 mi away/653 ft/43 ft above here

precip, snowfall, snow depth

Rank-

Silver Creek FallsSICO3

At a cooperative observer's station/5.8 mi away/1,463 ft/853 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Salem/Mcnary, drawn

The nearest airport reporting now, 20.1 mi from Mehama, Oregon. From its report of Oct 15, 2026, 10:56 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 Salem/Mcnary, 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 SLEFIG. A THE SKY OVER SALEM/MCNARYSECTION, 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 MORE0510TITLESalem/Mcnary, the skySTATION REPORT · ASOS SLETYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SLE-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

55.0 F with a dew point of 43.0 F, 64 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,700 ft up.

Chart of the air at Salem/Mcnary: temperature 55.0 degrees Fahrenheit and dew point 43.0, 64 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SLEFIG. B THE AIR AT SALEM/MCNARYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00030 F40 F50 F60 F70 FSATURATES 2,700 FT ABOVE THE STATION, AT 40.4 FTEMPERATURE 55.0 FDEW POINT 43.0 FSPREAD 12.0 FRELATIVE HUMIDITY 64 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 POINTTITLESalem/Mcnary, the airSTATION REPORT · ASOS SLETYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SLE-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Salem/Mcnary, 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 SLEFIG. C THE WIND AT SALEM/MCNARYPLAN, 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 FORCE73TITLESalem/Mcnary, the windSTATION REPORT · ASOS SLETYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SLE-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Salem/Mcnary, in 6 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 Mehama

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

Near Mehama

River and lake gauges