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Mount Vernon, Oregon

City in Grant County, Oregon

Air quality

The air at Mount Vernon

Index 55, moderate, led by fine particles. Read at 9 PM from its reporting area, John Day (OR), 8 miles off.

55Moderate
  • Fine particles (PM2.5)55Moderate-

The days ahead

Yesterday measured 22, good.

Smoke, the next 45 hours

Smoke near the ground peaks at index 58, moderate, Fri 9 PM.

SatSun

Precipitation

What has fallen at Mount Vernon

None in the last 3 days, to Fri 8 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 Mount Vernon, the next 45 hours

Visibility stays 10 miles or more through Sun 5 PM.

SatSun

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

What is measuring near here

The 6 instruments nearest Mount Vernon, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.5 miles away.

measured now4 instruments

John DayGCD

At an airfield/7.5 mi away/3,697 ft/846 ft above here

temp, wind, gust, visibility, precip, pressure

Rank20of 1,639

measured daily2 instruments

John DayJDRO3

At a cooperative observer's station/7.6 mi away/3,100 ft/249 ft above here

snowfall, snow depth, precip, high, low

Rank1,018of 1,639

Station report

The weather at John Day, drawn

The nearest airport reporting now, 7.5 mi from Mount Vernon, Oregon. From its report of Oct 16, 2026, 9:35 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 John Day, 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 GCDFIG. A THE SKY OVER JOHN DAYSECTION, 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 MORE0510TITLEJohn Day, the skySTATION REPORT · ASOS GCDTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-GCD-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

58.6 F with a dew point of 20.0 F, 22 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 8,600 ft up.

Chart of the air at John Day: temperature 58.6 degrees Fahrenheit and dew point 20.0, 22 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 8,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GCDFIG. B THE AIR AT JOHN DAYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,0000 F20 F40 F60 FSATURATES 8,600 FT ABOVE THE STATION, AT 12.5 FTEMPERATURE 58.6 FDEW POINT 20.0 FSPREAD 38.6 FRELATIVE HUMIDITY 22 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 POINTTITLEJohn Day, the airSTATION REPORT · ASOS GCDTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-GCD-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (60 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 20 mph.

Plan of the wind at John Day, north up: blowing from 60 degrees, the east northeast, 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 GCDFIG. C THE WIND AT JOHN DAYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 60°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEJohn Day, the windSTATION REPORT · ASOS GCDTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-GCD-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of John Day, 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 Mount Vernon

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

Near Mount Vernon

River and lake gauges